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Confirming a predicted selection rule in inelastic neutron scattering spectroscopy: the quantum translator-rotator H2 entrapped inside C60

Xu, Minzhong; Jim�nez-Ruiz, M�nica; Johnson, Mark R.; Rols, St�phane; Ye, Shufeng; Carravetta, Marina; Denning, Mark S.; Lei, Xuegong; Ba?i?, Zlatko; Horsewill, Anthony J.

Confirming a predicted selection rule in inelastic neutron scattering spectroscopy: the quantum translator-rotator H2 entrapped inside C60 Thumbnail


Authors

Minzhong Xu

M�nica Jim�nez-Ruiz

Mark R. Johnson

St�phane Rols

Shufeng Ye

Marina Carravetta

Mark S. Denning

Xuegong Lei

Zlatko Ba?i?

Anthony J. Horsewill



Abstract

We report an inelastic neutron scattering (INS) study of H2 molecule encapsulated inside the fullerene C60 which confirms the recently predicted selection rule, the first to be established for the INS spectroscopy of aperiodic, discrete molecular compounds. Several transitions from the ground state of para-H2 to certain excited translation-rotation states, forbidden according to the selection
rule, are systematically absent from the INS spectra, thus validating the selection rule with a high degree of confidence. Its confirmation sets a precedent, as it runs counter to the widely held view that the INS spectroscopy of molecular compounds is not subject to any selection rules.

Journal Article Type Article
Publication Date Jan 1, 2014
Deposit Date Jan 28, 2015
Publicly Available Date Jan 28, 2015
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 0031-9007
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 113
Issue 123001
DOI https://doi.org/10.1103/PhysRevLett.113.123001
Public URL https://nottingham-repository.worktribe.com/output/1000272
Publisher URL http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.123001
Additional Information Copyright APS.

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