title: Elastic X-ray scattering from state-selected molecules.
abstract: 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 H2molecules in the ground-state X1Σg+and first-excited EF1Σg+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.
authors: EaStCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, United Kingdom.
authors: Thomas
authors: T
authors: Northey
authors: EaStCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, United Kingdom.
authors: Andrés
authors: A
authors: Moreno Carrascosa
authors: Aix-Marseille Université and Institut Matériaux Microélectronique Nanosciences de Provence (IM2NP), Marseille, France.
authors: Steffen
authors: S
authors: Schäfer
authors: EaStCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, United Kingdom.
authors: Adam
authors: A
authors: Kirrander