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Issue 14, 2018
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Desorption dynamics of RbHe exciplexes off He nanodroplets induced by spin-relaxation

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Abstract

Doped He nanodroplets are ideal model systems to study the dynamics of elementary photophysical processes in heterogeneous nanosystems. Here we present a combined experimental and theoretical investigation of the formation of free RbHe exciplex molecules from laser-excited Rb-doped He nanodroplets. Upon excitation of a droplet-bound Rb atom to the 5p3/22Π3/2-state, a stable RbHe exciplex forms within about 20 ps. Only due to 2Π3/22Π1/2 spin-relaxation does the RbHe exciplex detach from the He droplet surface with a half life of about 700 ps, given by the spin-relaxation time and the coupling of spin and translational degrees of freedom.

Graphical abstract: Desorption dynamics of RbHe exciplexes off He nanodroplets induced by spin-relaxation

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Supplementary files

Article information


Submitted
22 Jan 2018
Accepted
11 Mar 2018
First published
12 Mar 2018

Phys. Chem. Chem. Phys., 2018,20, 9309-9320
Article type
Paper

Desorption dynamics of RbHe exciplexes off He nanodroplets induced by spin-relaxation

F. Coppens, J. von Vangerow, M. Barranco, N. Halberstadt, F. Stienkemeier, M. Pi and M. Mudrich, Phys. Chem. Chem. Phys., 2018, 20, 9309
DOI: 10.1039/C8CP00482J

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