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|Title:||Formation of coherent rotational wavepackets in small molecule-helium clusters using impulsive alignment.|
Mendoza Luna, Luis G.
Watkins, Mark J.
Ellis, Andrew M.
Minns, R. S.
Chapman, R. T.
Turcu, I. C.
Meiwes-Broer, K. H.
Underwood, J. G.
von Haeften, Klaus
|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.|
|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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