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

Xu, Minzhong and Jiménez-Ruiz, Mónica and Johnson, Mark R. and Rols, Stéphane and Ye, Shufeng and Carravetta, Marina and Denning, Mark S. and Lei, Xuegong and Bačić, Zlatko and Horsewill, Anthony J. (2014) Confirming a predicted selection rule in inelastic neutron scattering spectroscopy: the quantum translator-rotator H2 entrapped inside C60. Physical Review Letters, 113 (123001). ISSN 0031-9007

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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.

Item Type: Article
Additional Information: Copyright APS.
Schools/Departments: University of Nottingham UK Campus > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1103/PhysRevLett.113.123001
Depositing User: Horsewill, Professor Anthony
Date Deposited: 28 Jan 2015 18:29
Last Modified: 13 Sep 2016 19:22
URI: http://eprints.nottingham.ac.uk/id/eprint/28059

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