期刊
JOURNAL OF CHEMICAL PHYSICS
卷 145, 期 15, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4962256
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资金
- European Union [FP7-PEOPLE-2013-CIG-NEWLIGHT]
- Leverhulme Trust [RPG-2013-365]
The characterization of electronic, vibrational, and rotational states using elastic (coherent) X-ray scattering is considered. The scattering is calculated directly from complete active space self-consistent field level ab initio wavefunctions for H-2 molecules in the ground-state X-1 Sigma(+)(g) and first-excited EF1 Sigma(+)(g) electronic states. The calculated scattering is compared to recent experimental measurements [Y.-W. Liu et al., Phys. Rev. A 89, 014502 (2014)], and the influence of vibrational and rotational states on the observed signal is examined. The scaling of the scattering calculations with basis set is quantified, and it is found that energy convergence of the ab initio calculations is a good indicator of the quality of the scattering calculations. Published by AIP Publishing.
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