
Jun Wang
Ph.D. Student in Applied Physics, admitted Autumn 2019
All Publications
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Time-Resolved X-ray Photoelectron Spectroscopy: Ultrafast Dynamics in CS2 Probed at the S 2p Edge.
The journal of physical chemistry letters
2023: 7126-7133
Abstract
Recent developments in X-ray free-electron lasers have enabled a novel site-selective probe of coupled nuclear and electronic dynamics in photoexcited molecules, time-resolved X-ray photoelectron spectroscopy (TRXPS). We present results from a joint experimental and theoretical TRXPS study of the well-characterized ultraviolet photodissociation of CS2, a prototypical system for understanding non-adiabatic dynamics. These results demonstrate that the sulfur 2p binding energy is sensitive to changes in the nuclear structure following photoexcitation, which ultimately leads to dissociation into CS and S photoproducts. We are able to assign the main X-ray spectroscopic features to the CS and S products via comparison to a first-principles determination of the TRXPS based on ab initio multiple-spawning simulations. Our results demonstrate the use of TRXPS as a local probe of complex ultrafast photodissociation dynamics involving multimodal vibrational coupling, nonradiative transitions between electronic states, and multiple final product channels.
View details for DOI 10.1021/acs.jpclett.3c01447
View details for PubMedID 37534743
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Photon energy-resolved velocity map imaging from spectral domain ghost imaging
NEW JOURNAL OF PHYSICS
2023; 25 (3)
View details for DOI 10.1088/1367-2630/acc201
View details for Web of Science ID 000956244500001
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Controlled melting of a Wigner ion crystal with atomic resolution
PHYSICAL REVIEW A
2020; 102 (6)
View details for DOI 10.1103/PhysRevA.102.063121
View details for Web of Science ID 000602805100007
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Scalable quantum tomography with fidelity estimation
PHYSICAL REVIEW A
2020; 101 (3)
View details for DOI 10.1103/PhysRevA.101.032321
View details for Web of Science ID 000519697000007
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Unsupervised Generative Modeling Using Matrix Product States
PHYSICAL REVIEW X
2018; 8 (3)
View details for DOI 10.1103/PhysRevX.8.031012
View details for Web of Science ID 000438882400001