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Title: | Theoretical study of molecular vibrations in electron momentum spectroscopy experiments on furan: An analytical versus a molecular dynamical approach | Authors: | MORINI, Filippo DELEUZE, Michael Noboru, Watanabe Masahiko, Takahashi |
Issue Date: | 2015 | Source: | JOURNAL OF CHEMICAL PHYSICS, 142 (9), Art. N° 094308 | Abstract: | The influence of thermally induced nuclear dynamics (molecular vibrations) in the initial electronic ground state on the valence orbital momentum profiles of furan has been theoretically investigated using two different approaches. The first of these approaches employs the principles of Born-Oppenheimer molecular dynamics, whereas the so-called harmonic analytical quantum mechanical approach resorts to an analytical decomposition of contributions arising from quantized harmonic vibrational eigenstates. In spite of their intrinsic differences, the two approaches enable consistent insights into the electron momentum distributions inferred from new measurements employing electron momentum spectroscopy and an electron impact energy of 1.2 keV. Both approaches point out in particular an appreciable influence of a few specific molecular vibrations of A1 symmetry on the 9a1 momentum profile, which can be unravelled from considerations on the symmetry characteristics of orbitals and their energy spacing. | Notes: | Author to whom correspondence should be addressed. Electronic mail: michael.deleuze@uhasselt.be | Document URI: | http://hdl.handle.net/1942/18605 | ISSN: | 0021-9606 | e-ISSN: | 1089-7690 | DOI: | 10.1063/1.4913642 | ISI #: | 000350973900033 | Rights: | © 2015 AIP Publishing LLC. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2016 |
Appears in Collections: | Research publications |
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