Probing Molecular Chirality by Orbital-Angular-Momentum-Carrying X-ray Pulses
Journal Article
·
· Journal of Chemical Theory and Computation
- Univ. of California, Irvine, CA (United States); University of California, Irvine
- Ecole Polytechnique Federale Lausanne (Switzerland); Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- Univ. of California, Irvine, CA (United States)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
A twisted X-ray beam with orbital angular momentum is employed in a theoretical study to probe molecular chirality. A nonlocal response description of the matter-field coupling is adopted to account for the field short wavelength and the structured spatial profile. In this study, we use the minimal-coupling Hamiltonian, which implicitly takes into account the multipole contributions to all orders. The combined interactions of the spin and orbital angular momentum of the X-ray beam give rise to circular-helical dichroism signals, which are stronger than ordinary circular dichroism signals, and may serve as a useful tool for the study of molecular chirality in the X-ray regime.
- Research Organization:
- Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Science Foundation (NSF)
- Grant/Contract Number:
- SC0019484; FG02-04ER15571
- OSTI ID:
- 1864802
- Alternate ID(s):
- OSTI ID: 1609511
- Journal Information:
- Journal of Chemical Theory and Computation, Journal Name: Journal of Chemical Theory and Computation Journal Issue: 7 Vol. 15; ISSN 1549-9618
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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