Bio


Siegfried S. Hecker is a professor (research) in the Department of Management Science and Engineering and a senior fellow at CISAC and FSI. He is also an emeritus director of Los Alamos National Laboratory. He was co-director of CISAC from 2007-2012.

Hecker's research interests include plutonium science, nuclear weapons policy and international security, nuclear security (including nonproliferation and counter terrorism), and cooperative nuclear threat reduction. Over the past 22 years, he has fostered cooperation with the Russian nuclear laboratories to secure and safeguard the vast stockpile of ex-Soviet fissile materials.

His current research activities focus on the challenges of nuclear India, Pakistan, North Korea, and the nuclear aspirations of Iran. Hecker works closely with the Russian Academy of Sciences and is actively involved with the U.S. National Academies.

Hecker joined Los Alamos National Laboratory as graduate research assistant and postdoctoral fellow before returning as technical staff member following a tenure at General Motors Research. He led the laboratory's Materials Science and Technology Division and Center for Materials Science before serving as laboratory director from 1986 through 1997, and senior fellow until July 2005.

Among his professional distinctions, Hecker is a member of the National Academy of Engineering; foreign member of the Russian Academy of Sciences; fellow of the TMS, or Minerals, Metallurgy and Materials Society; fellow of the American Society for Metals; fellow of the American Physical Society, honorary member of the American Ceramics Society; and fellow of the American Academy of Arts and Sciences.

His achievements have been recognized with the Presidential Enrico Fermi Award; the National Academy of Engineering Arthur M. Bueche Award; the American Association for the Advancement of Science Award for Science Diplomacy; the American Physical Society’s Leo Szilard Lectureship; the American Nuclear Society's Seaborg Medal; the Department of Energy's E.O. Lawrence Award; the Los Alamos National Laboratory Medal; among other awards including the Eugene L. Grant Undergraduate Teaching Award at Stanford University and the Alumni Association Gold Medal and the Undergraduate Distinguished Alumni Award from Case Western Reserve University, where he earned his bachelor's, master's, and doctoral degrees in metallurgy.

Academic Appointments


Administrative Appointments


  • Co-Director, Center for International Security and Cooperation (2007 - 2012)

Honors & Awards


  • Arthur M. Bueche Award, National Academy of Engineering (September 29, 2014)
  • Enrico Fermi Award, The President of the United States and the U.S. Department of Energy (January 12, 2010)
  • Award for Science Diplomacy, American Association for the Advancement of Science (February 14, 2014)
  • Leo Szilard Lectureship Award, American Physical Society (2011)
  • Los Alamos National Laboratory Medal, Los Alamos National Laboratory (2008)
  • Alumni Association Gold Medal, Case Western Reserve University (2004)
  • Seaborg Medal, American Nuclear Society (2004)
  • President’s Medal, University of California (1997)
  • E.O. Lawrence Award, U.S. Department of Energy (1984)

Boards, Advisory Committees, Professional Organizations


  • Member, National Academy of Engineering (1988 - Present)
  • Member, American Academy of Arts and Sciences (2013 - Present)

Professional Education


  • PhD, Case Western Reserve (1968)

Current Research and Scholarly Interests


plutonium science; nuclear weapons stockpile stewardship; cooperative threat reduction

Projects


  • Nuclear Risk Reduction (NRR) Project: Russia, Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction Project-Russia:

    This project focuses on resurrecting U.S.-Russia cooperation on nuclear security and counterterrorism. Much progress has been made in the past 20 years to improve the security of nuclear materials and facilities in Russia through U.S. – Russian scientific cooperation, but this job is never done. Unfortunately the cooperative efforts to address these problems in the Russian complex had been dramatically curtailed by the Russian government during the past decade and now have been terminated because of the breakdown in relations between Washington and Moscow. Current efforts are focused on completing a book, jointly authored by Prof. Hecker and Russian colleagues that will demonstrate the enormous benefit to both sides of nuclear scientific cooperation in areas of weapon safety and security, as well as nonproliferation and countering nuclear terrorism over the past 20 years.

    Location

    Russia

  • Nuclear Risk Reduction (NRR) Project: China, Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction Project- China:

    This project’s objective is to enhance U.S.-China scientific cooperation on nuclear security, nonproliferation and countering nuclear terrorism by catalyzing interactions between the U.S. and Chinese scientific nuclear communities. These communities have much to offer to analyze and assess the dangers of nuclear terrorism with a special emphasis on the security and safeguards of nuclear materials, detection of nuclear trafficking and development of improved nuclear forensics. CISAC Visiting Scholar, Larry Brandt, is working with Prof. Hecker to engage the Chinese nuclear specialists in applying systems analysis tools to the challenges of nuclear terrorism in China and the United States. Cooperation between these communities is necessary to help China deal with the proliferation challenges posed by its ambitious plans for expansion of nuclear power. Prof. Hecker also works closely with Chinese nuclear colleagues to assess the proliferation risks in North Korea and Iran.

    Location

    China

  • Nuclear Risk Reduction (NRR) Project: The U.S.-Pakistan Nuclear Working Group (NWG), Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction Project—The U.S.-Pakistan Nuclear Working Group

    The U.S. – Pakistan Nuclear Working Group (NWG), part of the broader Stanford University U.S. – Pakistan Dialogue organized by Secretary William Perry and Secretary George Shultz, convenes U.S. and Pakistani nuclear experts in Track 1.5 dialogue to discuss ways of improving U.S. – Pakistan cooperation on nuclear security with the goal of reducing the risks of nuclear confrontation in South Asia and nuclear terrorism globally. The NWG is focused on improving nuclear security and reducing nuclear risks in Pakistan, including both the risk of a potential nuclear confrontation with India and the loss of nuclear weapons or materials to a terrorist group or non-state actors. The project also examines the role of nuclear power in Pakistan and the prospects of international collaboration.

    Location

    Pakistan

  • Nuclear Risk Reduction (NRR) Project: Iran, Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction Project—Iran

    Professor Siegfried Hecker continues efforts with American colleagues and through meetings with Iranian nuclear specialists and officials to advise the U.S. government as it deals diplomatically with Iran to prevent the acquisition of nuclear weapons while retaining the opportunity for peaceful uses of atomic energy. Prof. Hecker has published several articles on Iran’s nuclear program with the Hoover Institution’s Prof. Abbas Milani.

    Location

    Iran

  • Nuclear Risk Reduction (NRR) Project: Korean Peninsula, Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction—Korean Peninsula

    Professor Siegfried Hecker has a long history of engagement on the Korean Peninsula. He has written extensively on the North Korean nuclear program based on his seven visits to North Korea and his ongoing analysis of its nuclear developments. In the past several years, Prof. Hecker along with CISAC’s Chaim Braun and research fellows, has also done extensive analysis of the future of South Korea’s nuclear energy program. Specifically, they have performed a technical, economic and political analysis of South Korea’s nuclear energy and fuel cycle choices.

    Location

    North Korea, South Korea

  • Nuclear Risk Reduction (NRR) Project: India, Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction – India

    Professor Siegfried Hecker has worked with nuclear specialists from the Indian nuclear complex to reduce nuclear security risks and to counter nuclear terrorism. Numerous visits to India’s nuclear facilities helped to inform an analysis of the risks in India’s complex. These efforts are currently on hold, but Prof. Hecker expects the cooperation to resume in the next few years. These efforts will complement the nuclear risk reduction efforts in Pakistan.

    Location

    India

  • Nuclear Risk Reduction (NRR) Project: Central Asia, Stanford University - The Center for International Security and Cooperation (CISAC)

    The Nuclear Risk Reduction (NRR) Project, led by Dr. Siegfried Hecker, aims to reduce nuclear risks through outreach to nuclear specialists and to senior government officials in Russia, China, and Pakistan, and, as opportunities permit, personal and Track II diplomacy with nuclear-related officials in North Korea and Iran. The goal of the Nuclear Risk Reduction Project is to make steady progress in reducing today’s greatest nuclear risks and international security challenges. Hecker directs his efforts on nuclear issues in three areas: 1) decreasing the size of nuclear weapons arsenals around the world; 2) stopping the proliferation of nuclear weapons and technologies; and 3) keeping nuclear weapons and materials out of the hands of terrorist and sub-national groups.

    Nuclear Risk Reduction—Central Asia

    Professor Hecker’s projects in Central Asia, primarily in the countries of Kazakhstan and Uzbekistan, examine the plans and prospects for civilian nuclear activities in these countries, analyze potential proliferation risks, and develop plans to mitigate these risks. Hecker’s primary current project is to continue his work with Kazakh and Russian nuclear specialists to mitigate the potential proliferation dangers resulting from the legacy of nuclear tests and experiments at the former Soviet Semipalatinsk Nuclear Test Site in Kazakhstan.

    Location

    Kazakhstan, Uzbekistan

2014-15 Courses


Postdoctoral Advisees


All Publications


  • Ending the assassination and oppression of Iranian nuclear scientists BULLETIN OF THE ATOMIC SCIENTISTS Hecker, S. S., Milani, A. 2015; 71 (1): 46-52
  • A nuclear energy program that benefits the Iranian people The Bulletin of Atomic Scientists Hecker, Siegfried, S., Milani, A. 2014
  • Iran’s Path to Nuclear Peace Op-Ed in The New York Times, Web and Print (Appeared in Print in International New York Times on January 10, 2014). Hecker, Siegfried, S., Perry, William, J. 2014
  • North Korea reactor restart sets back denuclearization The Bulletin of Atomic Scientists Hecker, Siegfried, S. 2013
  • Final Report on Nuclear Energy and Nuclear Security in the Republic of Korea CISAC Published Report Hecker, Siegfried, S., Braun, C., Davis, P., Forrest et al, R. 2013
  • Can the North Korean Nuclear Crisis Be Resolved? in Northeast Asia’s Nuclear Challenges Hecker, Siegfried, S. edited by Lee, S. H. Published by the Institute for Far Eastern Studies and Kyungnam University, Seoul, South Korea. Chapter 5. 2013: 129-161
  • What to expect from a North Korea nuclear test Foreign Policy Hecker, Siegfried, S. 2013
  • Seoul’s Nuclear Weapon is the U.S. The New York Times: Room for Debate Hecker, Siegfried, S., Sagan, Scott, D. 2013
  • Hecker replies PHYSICS TODAY Hecker, S. S. 2012; 65 (2): 9-10
  • North Korea in 2011: Countdown to Kim il-Sung's centenary BULLETIN OF THE ATOMIC SCIENTISTS Hecker, S. S., Carlin, R. 2012; 68 (1): 50-60
  • Testimony in Hearing of the Subcommittee on Strategic Forces Arms Services Committee of the House of Representatives on “Governance, oversight and management of the Nuclear Security Enterprise to ensure High Quality Science, Engineering and Mission Effectiveness in an Age of Austerity Hecker, Siegfried, S. 2012
  • North Korea in 2011: Countdown to Kim il-Sung’s centenary The Bulletin of Atomic Scientists Hecker, Siegfried, S., Carlin, R. 2012
  • A Winning Gambit: Nuclear armed states stand to gain more than they lose from CTBT ratification in Spectrum Hecker, Siegfried, S. published by the Preparatory Commission for the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO). 2012: 19-23
  • North Korea from 30,000 Feet The Bulletin of Atomic Scientists Milonopoulos, N., Hecker, Siegfried, S., Carlin, R. 2012
  • Contemplating a third nuclear test in North Korea The Bulletin of Atomic Scientists Pabian, F., Hecker, Siegfried, S. 2012
  • Nuclear Developments in North Korea Hecker, Siegfried, S. edited by Kang, J. 2012
  • Chapter 14: “Nuclear Nonproliferation” Fundamentals of Materials for Energy and Environmental Sustainability. Hecker, Siegfried, S., Englert, M., Miller, Michael, C. edited by Ginley, David, S., Cahen, D. Cambridge UP. 2012: 1
  • Dealing with North Korea’s Nuclear Program American Academy of the Arts and Sciences Bulletin Hecker, Siegfried, S., Bosworth, S., Miller, S. 2012; LXV (4)
  • Adventures in scientific nuclear diplomacy PHYSICS TODAY Hecker, S. S. 2011; 64 (7): 31-37
  • What I found in Yongbyon and Why It Matters American Physical Society Hecker , S. S. 2011; 40 (2)
  • North Korea’s Light Water Reactor Ambitions Journal of Nuclear Materials Management, Spring Edition, (this article is a slightly changed version of the Russian-language article in Nuclear Club Journal). Hecker, Siegfried, S., Braun, C., Carlin, Robert, L. 2011; XXXIV (3): 18-25
  • Extraordinary Visits: Lessons Learned from Engaging with North Korea Nonproliferation Review Hecker, Siegfried, S. 2011; 18 (2): 445-455
  • What I found in North Korea and why it matters APS News: The Back Page Hecker, Siegfried, S. Publication of the American Physical Society. 2011: 8
  • Visiting North Korea: Q&A with Siegfried Hecker Physics Today.org Singularities Hecker, S. 2011
  • Nuclear non-proliferation Fundamentals of Materials for Energy and Environmental Sustainability Hecker, S. S., Englert, M., Miller , M. C. Cambridge University Press . 2011: 162-177
  • Nuclear promise or nuclear peril? MRS BULLETIN Hecker, S. S. 2010; 35 (10): 726-732
  • Lessons learned from the North Korean nuclear crises DAEDALUS Hecker, S. S. 2010; 139 (1): 44-56
  • What I found in North Korea: Pyongyang’s Plutonium Is No Longer the Only Problem. Foreign Affairs Hecker, Siegfried, S. 2010
  • Redefining denuclearization in North Korea The Bulletin of the American Scientists Hecker, Siegfried, S. 2010
  • Smart Power Nuclear Diplomacy,’ Office of Science & Technology, Embassy of Austria, Bridges Online Magazine Hecker, Siegfried, S. 2010; 25
  • North Korea’s Choice: Bombs over Electricity National Academy of Engineering, The Bridge Hecker, Siegfried, S., Lee, S., Braun, C. 2010: 5-12
  • North Korea's Yongbyon Nuclear Complex: A Report by Siegfried S. Hecker Center for International Security and Cooperation Hecker, Siegfried, S. 2010
  • North Korea’s Reactors: Past, Present and Future (in Russian language) Nuclear Club Journal Hecker, Siegfried, S., Braun, C., Carlin, Robert, L. 2010: 25-33
  • EDWARD TELLER RETURNS TO LOS ALAMOS EDWARD TELLER CENTENNIAL SYMPOSIUM Hecker, S. S. 2010: 4-12
  • Where is North Korea's Nuclear Program Heading? Physics & Society Hecker , S. S. 2010; 40 (2)
  • North Korea's Choice: Bombs Over Electricity The Bridge Hecker, S. S., Lee, S., Braun , C. 2010; 40 (2)
  • The risks of North Korea’s nuclear restart Bulletin of the Atomic Scientists Hecker, Siegfried, S. 2009
  • From Pyongyang to Tehran, with Nukes Foreign Policy Hecker, Siegfried, S. 2009
  • Senator Domenici’s Nuclear Non-Proliferation Legacy Hecker, Siegfried, S. 2009
  • Nuclear Non-Proliferation Hecker, Siegfried, S. 2009
  • National Research Council of the National Academies, NRC Committee on Counterterrorism Challenges for Russia and the United States Countering Terrorism: Biological Agents, Transportation Networks, and Energy Systems- Summary of the workshop. Hecker et al., Siegfried, S. National Academy Press, Washington, DC. 2009: 1
  • Properties of plutonium and its alloys for use as fast reactor fuels Hecker, S. S., Stan, M. ELSEVIER SCIENCE BV. 2008: 112-118
  • Plutonium - an element never at equilibrium Hecker, S. S. SPRINGER. 2008: 1585-1592
  • Denuclearizing North Korea BULLETIN OF THE ATOMIC SCIENTISTS Hecker, S. S. 2008; 64 (2): 44-?
  • Preventing nuclear weapon proliferation as nuclear power expands MRS BULLETIN Hecker, S. S. 2008; 33 (4): 340-342
  • Plutonium: An element never at equilibrium Metallurgical and Materials Transactions A Hecker, Siegfried, S. 2008; 39 (7): 1585-1592
  • The Right Path with North Korea Op-ed, Washington Post Siegfried, William, S., Hecker 2008
  • Chapter 21 in Nuclear Safeguards, Security and Nonproliferation: Achieving Security with Technology and Policy Why We Need a Comprehensive Safeguards System to Keep Fissile Materials Out of the Hands of Terrorists Hecker, Siegfried, S. edited by Doyle, J. Elsevier, Amsterdam. 2008: 403-414
  • Preventing Nuclear Weapon Proliferation as Nuclear PowerExpands MRS Bulletin Hecker, Siegfried, S. 2008: 33
  • Dangerous Dealings: North Korea's Nuclear Capabilities and the Threat of Export to Iran Arms Control Today Hecker, S. S., Liou , W. 2007; 37 (2)
  • Plutonium and Plutonium Compounds Kirk-Othmer Concise Encyclopedia of Chemical Technology, 5th Edition. Clark, David, L., Hecker, Siegfried, S., Jarvinen, Gordon, D., Neu, Mary, P. 2007
  • Diplomacy Can Reduce North Korea's Nuclear Threat Aviation Week & Space Technology Hecker, Siegfried, S. 2007: 66
  • Dangerous Dealings: North Korea’s Nuclear Capabilities and the Threat of Export to Iran Arms Control Today Hecker, Siegfried, S., Liou, W. 2007; 37: 6-11
  • Toward a comprehensive safeguards system: Keeping fissile out materials of terrorists' hands ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE Hecker, S. S. 2006; 607: 121-132
  • Plutonium and Plutonium Compounds Kirk-Othmer Encylopedia of Chemical Technology Clark, David, L., Hecker, Siegfried, S., Jarvinen, Gordon, D., Neu, Mary, P. Wiley Interscience. 2006; 5th: 677-712
  • National Research Council of the National Academies, NRC Committee on Counterterrorism Challenges for Russia and the United States Countering Urban Terrorism in Russia and the United States- Proceedings of a workshop. Hecker et al., Siegfried, S. National Academy Press, Washington, DC. 2006: 1
  • Dr. Smith Goes to Los Alamos: Cyril Stanley Smith, Plutonium Metallurgy, and the Manhattan Project Resonance Srinivasan, S., G., Hecker, S., S., Follansbee, P., S., Baskes, M., I. 2006: 6-23
  • Mechanical behavior of delta-phase plutonium alloys. Part I: Constitutive Model J. Nucl. Mater Stout, M., G., Kaschner, G., C., Hecker, S., S. 2006; 350: 113-121
  • Mechanical behavior of delta-phase plutonium alloys. Part II: Model verification and application J. Nucl. Mater Kaschner, G., C., Stout, M., G., Hecker, S., S. 2006; 350: 122-128
  • Countering Urban Terrorism in Russia and the United States- Proceedings of a workshop. Hecker et al., Siegfried, S. 2006
  • Toward a Comprehensive Safeguards System: Keeping Fissile Materials Out of Terrorists’ Hands The Annals of the American Academy of Political and Social Science Hecker, Siegfried, S. 2006; 607: 121-132
  • Chapter 7, Plutonium in The Chemistry of the Actinides and Transactinides Clark, David, L., Hecker, Siegfried, S., Jarvinen, Gordon, D., Neu, Mary, P. edited by Morss, Lester, R., Edelstein, Norman, M., Fuger, J. Springer, New York. 2006; 3rd: 813-1264
  • Securing Nuclear Material Issues in Science and Technology, Forum Section. Hecker, S., S. 2005; 21 (3)
  • The Nuclear Crisis in North Korea MRS Bulletin Hecker, S., S. 2004; 29 (11): 782-785
  • The delta to alpha-prime transformation in plutonium-gallium alloys Mitchell, J., N., Hecker, S., S., Pereyra, R., A., Pete, D., V. 2004
  • Atoms for Peace Issues in Science and Technology, Forum Section. Hecker, S., S. 2004
  • Comment on “Improving U.S. - Russia Nuclear Cooperation Issues in Science and Technology, the Forum Section Hecker, S., S. 2004
  • The Nuclear Crisis in North Korea The Bridge, National Academy of Engineering Hecker, S., S. 2004: 17-23
  • The Magic of Plutonium: 5f Electrons and Phase Stability Metallurgical and Materials Transactions Hecker, S., S. 2004; 35A: 2207-2221
  • Terrorism: Reducing Vulnerabilities and Improving Responses: A U.S.-Russian Workshop Proceedings Hecker, S., S., Schweitzer, G., E. 2004
  • Terrorism: Reducing Vulnerabilities and Improving Responses- U.S.-Russian workshop proceedings. Hecker et al., Siegfried, S. 2004
  • Phase Stability and Phase Transformation in Pu-Ga Alloys Progress in Materials Science, A Festschrift Volume in honor of T.B. Massalski Hecker, S., S. 2004; 49: 429-485
  • A Tribute to Terence E. Mitchell Metallurgical and Materials Transactions Hecker, S., S. 2004; 35A: 2203-2205
  • Strengthening the US-Russian Partnership for Nuclear Nonproliferation Hecker, S., S., Laverov, N. 2003
  • Plutonium: Coping with Instability Journal of Metals Hecker, S., S. 2003; 55 (9): 13-18
  • High-Impact Terrorism: Proceedings of a Russian-American Workshop National Research Council of the National Academies S., G., S., Hecker 2002
  • A Tribute to Zachary Fisk Physica B Hecker, S., S. 2002; 318: 57-60
  • High-Impact Terrorism: Proceedings of a Russian-American Workshop Hecker, S., S., Schweitzer, G., E. 2002
  • National Research Council of the National Academies, NRC Committee on Confronting Terrorism in Russia High-Impact Terrorism: Proceedings of a Russian-American Workshop. Hecker et al., Siegfried, S. National Academy Press, Washington, DC. 2002: 1
  • Nuclear Terrorism Hecker, S., S. 2002
  • The Complex World of Plutonium Science MRS Bulletin Hecker, S., S. 2001; 26 (9): 672-678
  • Thoughts about an Integrated Strategy for Nuclear Cooperation with Russia The Nonproliferation Review Hecker, S., S. 2001: 1-24
  • Plutonium and Its Alloys: From Atoms to Microstructure Los Alamos Science Hecker, S., S. 2000: 290-335
  • Plutonium Ageing: From Mystery to Enigma Hecker, S., S., Martz, J., C. edited by Mallinson, L., G. 2000
  • A Path to a Nuclear Future in NUCLEAR PHYSICAL METHODS IN RADIOECOLOGICAL INVESTIGATIONS OF NUCLEAR TEST SITES Hecker, S., S. edited by Hecker, S., S., Mason, C., F. V., Kadyrzhanov, K., K. NATO Science Series. 2000: 3-9
  • Aging of Plutonium and Its Alloys Los Alamos Science Hecker, S., S., Martz, J., C. 2000: 238-243
  • Plutonium Science Challenges Future Researchers The Actinide Research Quarterly, Los Alamos National Laboratory Hecker, S., S. 2000
  • NUCLEAR PHYSICAL METHODS IN RADIOECOLOGICAL INVESTIGATIONS OF NUCLEAR TEST SITES Series 1: Disarmament Technologies. Hecker, S., S., Mason, C., F. V., Kadyrzhanov, K., K., Kislitsin, S., B. NATO Science Series. 2000; 31
  • Mechanical Behavior of Plutonium and its Alloys Los Alamos Science Hecker, S., S., Stevens, M., F. 2000: 336-355
  • Los Alamos Science Staff, “Plutonium: A Historical Overview,” LosAlamos Science Hecker, S., S. 2000: 3-47
  • A Tale of Two Diagrams Los Alamos Science Hecker, S., S., Timofeeva, L., F. 2000: 244-251
  • ESSAYS ON THE FUTURE: IN HONOR OF NICK METROPOLIS Hecker, S., S., Rota, G, C. edited by Birkhaeuser, B. 2000
  • The Plastic Flow Characteristics of Uranium-Niobium Alloys as a Function of Strain Rate and Temperature in Constitutive and Damage Modeling of Inelastic Deformation and Phase Transformation Cady, C., M., Gray III, G., T., Hecker, S., S., Thoma, D., J., Korzekwa, D., R., Patterson, R., A. edited by Khan, A., S. Neat Press, Fulton, Maryland. 1998: 15-18
  • An Investigation of Plastic Flow and Differential Work Hardening on Orthotropic Brass Tubes Under Fluid Pressure and Axial Load Int. J. Solids Struct. Hill, R., Hecker, S., S., Stout, M., G. 1994; 31: 2999-3021
  • Actinides: From Heavy Fermions to Plutonium Metallurgy Physica Smith, J., L., Fisk, Z., Hecker, S., S. 1985; 130B: 151-158
  • Sheet Metal Forming and Testing In Workability Testing Techniques Ghosh, A., K., Hecker, S., S., Keeler, S., P. American Society for Metals. 1984: 135—197
  • Factors Affecting Plastic Instability and Sheet Formability in Mechanical Behavior of Materials-IV Hecker, S., S. edited by Carlsson, J., Ohlson, N., G. Pergamon Press. 1984: 129-138
  • Strain Hardening of Heavily Cold-Worked Metals Hecker, S., S., Stout, M., G. edited by Krauss, G. 1984
  • Plutonium - A Wartime Nightmare Buta Metallurgist’s Dream Los Alamos Science Baker, R., D., Hecker, S., S., Harbur, D., R. 1983; 4: 142-151
  • An Evaluation of Anisotropic EffectiveStress—Strain Criteria for the Biaxial Yield and Flow Behavior of 2024 AluminumTubes Transactions of the ASME. Journal of Engineering Materials and Technology Stout, M., G., Hecker, S., S., Bourcier, R. 1983; 105 (4): 242-9
  • Large-Strain Plastic Deformation of Commercially-Pure Nickel Metal Science Zimmer, W., H., Hecker, S., S., Rohr, D., L., Murr, L., E. 1983; 17: 198-206
  • An X-ray Diffraction Study of the δ→α Transformation in a Pu -2.0 at% Al Alloy J. Nucl. Materials Zukas, E., G., Hecker, S., S., Pereyra, R., A. 1983; 115: 63-68
  • Fracture Strains in Biaxially Loaded 2024 Aluminum Tubes Mechanics of Material Stout, M., G., Hecker, S., S. 1983; 2: 19—22
  • Theory of Saturation Stress Difference in Torsion Versus Other Types of Deformation at Low Temperature J. Mechanics of Materials, Mechanics of Materials. Weertman, J., Hecker, S., S. 1983; 2 (2): 89-101
  • Nucleation and Evolution of Strain-Induced Martensitic (B.C.C.) Embryos and Substructure in Stainless Steel: A Transmission Electron Microscope Study Acta Met. Staudhammer, K., P., Murr, L., E., Hecker, S., S. 1983; 21: 267-274
  • The Effect of Hydrogen Onthe Multiaxial Stress-Strain Behavior of Titanium Tubing Met. Trans. Lentz, C., W., Koss, D., A., Stout, M., G., Hecker, S., S. 1983; 14A: 2527—2533
  • Materials Response to Large Plastic Deformation Stout, M., G., Hecker, S., S. 1983
  • Role of Geometry in Plastic Instability of Tubes and Sheet Mechanics of Materials Stout, M., G., Hecker, S., S. 1983; 2: 23—31
  • Plasticity of Metals at Finite Strain: Theory, Computation and Experiment Experiments on Plastic Defor­mation AtFinite Strains Hecker, S., S., Stout, M., G., Eash, D., T. edited by Lee, E., H., Mallett, R., L. Stanford University, Stanford, Ca.. 1982: 162—200
  • Response to Discrepancy Between SimpleModel for Strain-Induced Softening in Eutectics and High-Pressure Experiment Phys. Rev. Letters Suhl, H., Hecker, S., S., Smith, J., L. 1982; 48: 962
  • Electron Microscope Study of the Genesis of Strain-Induced Martensite Embryos Staudhammer, K., P., Murr, L., E., Hecker, S., S. edited by Aaronson, H., I., Laughlin, D., E., Sekerka, R., F. 1982
  • Some Properties of Transformation Products in a Plutonium-Aluminum Alloy Zukas, E., G., Hecker, S., S., Morgan, J., R., Pereyra, R., A. edited by Aaronson, H., I., Laughlin, D., E., Sekerka, R., F. 1982
  • Effects of Strain State and Strain Rate on Deformation—Induced Transformation in 304 Stainless Steel:Part II. Microstructural Study Met. Trans. Murr, L., E., Staudhammer, K., P., Hecker, S., S. 1982; 13A: 627
  • Pressure and Temperature Induced Transformations in a Plutonium-Aluminum Alloy Hecker, S., S., Zukas, E., G., Morgan, J., R., Pereyra, R., A. 1982
  • Effects of Strain State and Strain Rate on Deformation—Induced Transformation in 304 Stainless Steel: Part I. Magnetic Measurements and Mechanical Behavior Met. Trans. Hecker, S., S., Stout, M., G., Staudhammer, K., P., Smith, J., L. 1982; 13A: 619
  • Comparison of Substructures Between Uniaxial AndBiaxial Deformation in 1100-0 Aluminum Rohr, D., L., Hecker, S., S. edited by Bailey, G., W. 1981
  • A TEM Study of the Evolution of Strain-Induced Martensite Staudhammer, K., P., Murr, L., E., Hecker, S., S. edited by Bailey, G., W. 1981
  • Effects of Strain Rate on Deformation-Induced Martensite in 304 Stainless Steel in Shock Waves and High-Strain Rate Phenomena In Metals Staudhammer, K., P., Frantz, C., E., Hecker, S., S., Murr, L., E. edited by Myers, M., A., Murr, L., E. Plenum Press. 1981: 1
  • Multiaxial Loading of Large-Diameter, Thin-WalledTube Rock Specimens Geophysical Research Letters Hecker, S., S., Petrovic, J., J. 1981; 8: 703
  • Three Surface TEM Observations of Cold Rolled 1100Aluminum Rohr, D., L., Hecker, S., S. edited by Bailey, G., W. 1981
  • Strain-Induced Softening of Certain Eutectics Phys. Rev. Letters Suhl, H., Matthias, B., T., Hecker, S., S., Smith, J., L. 1980; 45: 1707
  • Quantitative Evidence for Dislocation Emission from Grain Boundaries Scripta Met. Murr, L., E., Hecker, S., S. 1979; 13: 167
  • Brittle Fracture in Polycrystalline Ir-O.3% W Met. Trans. Rohr, D., L., Murr, L., E., Hecker, S., S. 1979; 10A: 399
  • FORMABILITY; ANALYSIS, MODELING AND EXPERIMENTATION Hecker, S., S., Ghosh, A., K., Gegel, H., L. TMS/AIM. 1978
  • Brittle Fracture in Iridium Met.Trans. Hecker, S., S., Rohr, D., L., Stein, D., F. 1978; 9A: 481
  • Development of Substructure in 1100 Aluminum During Cold Rolling Rohr, D., L., Hecker, S., S. 1978
  • Experimental Studies of Sheet Stretchability in FORMABILITY; ANALYSIS, MODELING AND EXPERIMENTATION Hecker, S., S. edited by Hecker, S., S., Ghosh, A., K., Gegel, H., L. TSM/AIME. 1978: 150-182
  • Sheet Stretching Experiments in APPLICATIONS OF NUMERICAL METHODS TO FORMING PROCESSES Hecker, S., S. edited by Armen, H. ASME, AMD. 1978: 85—94
  • Brittle Grain Boundary Fracture in Iridium Rohr, D., L., Murr, L., E., Hecker, S., S. 1977
  • The Forming of Sheet Metal Scientific American Hecker, S., S., Ghosh, A., K. 1976; 235: 100
  • Experimental Studies of Yield Phenomena in Biaxially Loaded Metals in CONSTITUTIVE EQUATIONS IN VISCOPLASTICITY: COMPUTATION AND ENGINEERING ASPECTS, Am. Soc. Mech. Engrs. Hecker, S., S. 1976: 1-33
  • Fracture Behavior of a Pt-30% Rh-8% W Alloy Between Room Temperature and 1300 C in MICROSTRUCTURAL SCIENCE Rohr, D., L., Hecker, S., S. edited by Filer, E., W., Hoegfeldt, J., M., McCall, J., L. Elsevier, NY. 1976: 245-262
  • Effects of Strain Rate on the Tensile Properties of α - and δ - stabilized Plutonium in PLUTONIUM 1975 AND OTHER ACTINIDES Hecker, S., S., Morgan, J., R. edited by Blank, H., Linder, R. North-Holland Publishing Co., Amsterdam. 1976: 697—709
  • A Simple Technique for Determining Forming Limit Curves Sheet Metal Industries Hecker, S., S. 1975: 671-676
  • Failure of Thin Sheets Stretched Over Rigid Punches Met. Trans. Ghosh, A., K., Hecker, S., S. 1975; 6A: 1065-1074
  • Formability of Aluminum Alloy Sheets J. Eng. Mat. and Tech. Hecker, S., S. 1975; 97: 66-73
  • A Criterion for Plastic Instability in Punch Stretching of Thin Sheets Ghosh, A., K., Hecker, S., S. 1974
  • A Reproducible Cup Test for Assessing Sheet Metal Stretchability Met. Engng. Quart. 14 Hecker, S., S. 1974
  • Fracture Surfaces of High-Strength Low-Alloy Steel Sheets Met. Trans. Hecker, S., S. 1974; 5: 2107
  • Stretching Limits in Sheet Metals: In-Plane Versus Out-of-Plane Deformation Met. Trans. Ghosh, A., K., Hecker, S., S. 1974; 5: 2161
  • Formability of High—Strength Low Alloy Steel Sheets Metals Engng. Quarterly Hecker, S., S. 1973; 13: 42
  • The Influence of Deformation History on the Stress-Strain and Yield Surface Behavior of Aluminum and Copper Met. Trans. Hecker, S., S. 1973; 4: 985
  • Experimental Investigation of Corners in the Yield Surface Acta Met. Hecker, S., S. 1972; 13: 69
  • A Simple Forming Limit Curve Technique and Results on Aluminum Alloys Hecker, S., S. 1972
  • Automotive Applications of High-Strength Low-Alloy Steels Hecker, S., S. 1972
  • A Fabrication Method for Thin-Walled Tubular Test Specimens Microtecnic Hecker, S., S. 1971; 25: 49
  • Mechanical Behavior of Uniaxial Loading Multi-layered Cylindrical Composites J. Basic Engng. Ser. D Hamilton, C., H., Hecker, S., S., Ebert, L., J. 1971; 93: 661
  • Yield Surfaces in Prestrained Aluminum and Copper Met. Trans. Hecker, S., S. 1971; 2: 2077
  • Comparison of Residual Stress Effects on the Yielding and Fracture of Metal and Glass Composites J. Mat. Science Hecker, S., S., Cooper, A., R. 1970; 5: 1011
  • Elastoplastic Analysis of Residual Stresses and Axial Loading in Composites J. Materials Hecker, S., S., Hamilton, C., H., Ebert, L., J. 1970; 5: 868
  • Improved Fiber Composite Tensile Performance by Mechanical Residual Stress Relief Trans. ASM Hecker, S., S., Hamilton, C., H., Ebert, L., J. 1969; 62: 740
  • Elastic-Plastic Analysis: A Simplified Approach Scripta Met Hecker, S., S., Hamilton, C., H., Ebert, L., J. 1969; 3: 793
  • The Stress-Strain Behavior of Concentric Composite Cylinders J. Comp. Materials Ebert, J., Hecker, S., S., Hamilton, C., H. 1968; 2: 458
  • Residual Stress Effects in Oriented Fiber Composite Materials Ebert, L., J., Hecker, S., S., Hamilton, C., H. 1968
  • Dislocation Pile-ups in AnisotropicCrystals Phys. Stat. Sol Mitchell, T., E., Hecker, S., S., Smialek, R., L. 1965; 11: 585