LASER SPECTROSCOPY OF ALKALI-DOPED HELIUM CLUSTERS

被引:155
作者
STIENKEMEIER, F
HIGGINS, J
ERNST, WE
SCOLES, G
机构
[1] PENN STATE UNIV, DEPT PHYS, UNIVERSITY PK, PA 16802 USA
[2] PRINCETON UNIV, DEPT CHEM, PRINCETON, NJ 08544 USA
关键词
D O I
10.1103/PhysRevLett.74.3592
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A beam of HeN clusters (103N104) 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.
引用
收藏
页码:3592 / 3595
页数:4
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共 34 条
  • [1] Becker E.W., Klingelhofer R., Lohse P., Theoretische Behandlung des Einflusses sterischer Effekte auf die Reaktivität aliphatischer Verbindungen, Zeitschrift für Naturforschung B, 16 A, (1961)
  • [2] Gspann J., Krieg G., Vollmar H., J. Phys. (Paris), Colloq., 38, pp. C2-C38, (1977)
  • [3] Gspann J., The Physics of Electronic and Atomic Collisions,, (1982)
  • [4] Jiang T., Kim C., Northby J.A., Phys. Rev. Lett., 71, (1993)
  • [5] Joppien M., Karnbach R., Moller T., Phys. Rev. Lett., 71, (1993)
  • [6] Buchenau H., Knuth E.L., Northby J., Toennies J.P., Winkler C., J. Chem. Phys., 92, (1990)
  • [7] Sindzingre P., Ceperly D.M., Klein M.L., Phys. Rev. Lett., 63, (1989)
  • [8] RamaKrishna M.W., Whaley K.B., Collective excitations of helium clusters, Physical Review Letters, 64, (1990)
  • [9] Whaley K.B., Int. Rev. Phys. Chem., 13, (1994)
  • [10] Brink D.M., Stringari S., Z. Phys. D, 15, (1990)