X-ray-initiated photodissociation of the glycine molecule

Fang, Li; Xiong, Hui; Kukk, Edwin; Petrovic, Vladmire S.; Berrah, Nora

doi:10.1103/physreva.98.053408

X-ray-initiated photodissociation of the glycine molecule

Journal Article · Thu Nov 08 23:00:00 EST 2018 · Physical Review A

DOI:https://doi.org/10.1103/physreva.98.053408· OSTI ID:1490369

Fang, Li ^[1]; Xiong, Hui ^[2]; Kukk, Edwin ^[3]; Petrovic, Vladmire S. ^[4]; Berrah, Nora ^[2]

Univ. of Texas, Austin, TX (United States). Center for High Energy Density Science
Univ. of Connecticut, Storrs, CT (United States). Dept. of Physics
Univ. of Turku, Turku (Finland). Dept. of Physics and Astronomy
SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE)

We investigated the charge distribution and dissociation dynamics of glycine (NH₂ CH₂ COOH) molecules irradiated with 310-eV x rays from the Advanced Light Source synchrotron. With simultaneous measurements of the fragment ion yield, dissociation angle, and kinetic energy, we were able to reconstruct a three-dimensional image of the x-ray-initiated molecular dissociation. Using coincidence and correlated analysis and applying a systematic comparison of properties of ion species, we partially disentangled the fragmentation pathways and identified the most probable fragmentation channels that lead to the observed fragment ions. In addition, we showed anisotropic angular distributions of dissociation subsequent to core-level photoionization and Auger decay and found an association between the initial bond-breaking sites and the kinetic energies of the final fragment ions.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-76SF00515; SC0012376; NA0002008

OSTI ID:: 1490369

Alternate ID(s):: OSTI ID: 1481446

Journal Information:: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 98; ISSN PLRAAN; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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