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Probing the structure and dynamics of molecular clusters using rotational wave packets.

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posted on 2015-07-23, 11:58 authored by Gediminas Galinis, C. Cacho, R. T. Chapman, Andrew M. Ellis, M. Lewerenz, Luis G. Mendoza Luna, R. S. Minns, M. Mladenović, A. Rouzée, E. Springate, I. C. Turcu, Mark J. Watkins, Klaus von Haeften
Rotational wave packets of the weakly bound C(2)H(2)-He complex have been created using impulsive alignment. The coherent rotational dynamics were monitored for 600 ps enabling extraction of a frequency spectrum showing multiple rotational energy levels up to J = 4. spectrum has been combined with ab initio calculations to show that the complex has a highly delocalized structure and is bound only by ca. 7 cm(-1). The experiments demonstrate how highly featured rotational spectra can be obtained from an extremely cold environment where only the lowest rotational energy states are initially populated.

Funding

The authors wish to thank STFC for access to the Artemis facility at the Rutherford Appleton Laboratory and the University of Leicester for funding to support the studentship for G. G. KvH kindly acknowledges funding by STFC (seed corn fund for experiments using 4th generation light sources) and the Leverhulme Trust (F/00212/AH). L. G. M. L. acknowledges financial support from the Mexican Consejo Nacional de Ciencia y Tecnología (CONACYT) Scholarship No. 310668, ID 215334. R. S. M. would like to thank the Royal Society for support (UF100047). M. L. and M. M. acknowledge computational resources funded through ANR Grant No. ANR-08-BLAN-0146-01.

History

Citation

Physical Review Letters, 2014, 113, 043004

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Chemistry

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  • VoR (Version of Record)

Published in

Physical Review Letters

Publisher

American Physical Society

issn

0031-9007

eissn

1079-7114

Copyright date

2014

Available date

2015-07-23

Publisher DOI

Publisher version

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.043004

Notes

PACS numbers: 33.20.-t, 33.80.-b, 36.40.Mr The supplementary material contains a table of the assigned transitions of the HCCH-He complex http://journals.aps.org/prl/supplemental/10.1103/PhysRevLett.113.043004

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en

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