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Title: Formation of coherent rotational wavepackets in small molecule-helium clusters using impulsive alignment.
Authors: Galinis, Gediminas
Mendoza Luna, Luis G.
Watkins, Mark J.
Ellis, Andrew M.
Minns, R. S.
Mladenović, M.
Lewerenz, M.
Chapman, R. T.
Turcu, I. C.
Cacho, C.
Springate, E.
Kazak, L.
Göde, S.
Irsig, R.
Skruszewicz, S.
Tiggesbäumker, J.
Meiwes-Broer, K. H.
Rouzée, A.
Underwood, J. G.
Siano, M.
von Haeften, Klaus
First Published: 27-May-2014
Publisher: Royal Society of Chemistry
Citation: Faraday Discussions, 2014, 171, pp. 195-218
Abstract: We show that rotational line spectra of molecular clusters with near zero permanent dipole moments can be observed using impulsive alignment. Aligned rotational wavepackets were generated by non-resonant interaction with intense femtosecond laser pump pulses and then probed using Coulomb explosion by a second, time-delayed femtosecond laser pulse. By means of a Fourier transform a rich spectrum of rotational eigenstates was derived. For the smallest cluster, C(2)H(2)-He, we were able to establish essentially all rotational eigenstates up to the dissociation threshold on the basis of theoretical level predictions. The C(2)H(2)-He complex is found to exhibit distinct features of large amplitude motion and very early onset of free internal rotor energy level structure.
DOI Link: 10.1039/c4fd00099d
ISSN: 1359-6640
eISSN: 1364-5498
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Archived with reference to SHERPA/RoMEO and publisher website.
Description: Electronic supplementary information (ESI) available. See DOI: 10.1039/c4fd00099d
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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