Phys. Rev. Lett. 74, 3592–3595 (1995)Laser Spectroscopy of Alkali-Doped Helium ClustersReceived 21 October 1994; published in the issue dated 1 May 1995 A beam of HeN clusters ( 103≲N≲104) is seeded with one or more chromophores by sticky collisions with a low pressure gas and is probed, thereafter, by laser-induced fluorescence spectroscopy. Using sodium, we observe the spectra of atoms, dimers, and trimers and find that they are almost unshifted from their gas phase counterparts, but show cluster-induced broadenings in the range of tens of cm-1. Upon formation on the cluster surface, a fraction of the dimers desorbs slowly and becomes part of the beam, allowing narrow, rotationally resolved, spectra to be obtained. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.3592
DOI:
10.1103/PhysRevLett.74.3592
PACS:
36.40.Mr
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