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Title: Probing Molecular Chirality by Orbital-Angular-Momentum-Carrying X-ray Pulses

Journal Article · · Journal of Chemical Theory and Computation
 [1];  [2];  [3];  [4]; ORCiD logo [3]
  1. Univ. of California, Irvine, CA (United States); University of California, Irvine
  2. Ecole Polytechnique Federale Lausanne (Switzerland); Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  3. Univ. of California, Irvine, CA (United States)
  4. 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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