Low Temperature Physics: 32, 1086 (2006); https://doi.org/10.1063/1.2389018 (6 pages)
Fizika Nizkikh Temperatur: Volume 32, Number 11 (November 2006), p. 1426-1433    ( to contents , go back )

Ionic chromophores Xep+ (p ≤ 4) in multishell rare-gas clusters Xem(NF3)kNe7500 (m, k≤ 100) studied with fluorescence spectroscopy

A. Kanaev1, L. Museur2, T. Laarmann3, and T. Möller4

1Laboratoire d'Ingénierie des Matériaux et des Hautes Pressions, C.N.R.S., Institut Galilée, Univerité Paris-Nord, Villetaneuse 93430, France
E-mail: kanaev@limhp.univ-paris13.fr

2Laboratoire Physique des Lasers, C.N.R.S., Institut Galilée, Univerité Paris-Nord, Villetaneuse 93430, France

3Max-Born Institute, Max-Born Str. 2a, Berlin 12489, Germany

4Institut für Atomare Physik, Technische Universitüt Berlin, Hardenbergstr. 36, Berlin 10623, Germany
pos Анотація:

Received July 7, 2006

Abstract

We have studied fluorescence spectra of small Xem and Xem(NF3)k clusters (m, k ≤ 102) embedded in large host Ne7500 clusters, excited with SR excitation in the VUV spectral region above the Xe+(2P1/2) atomic limit. The IR emission bands due to ionic chromophores Xep+ (p = 2, 3, 4) as well as UV (B–X) and visible (C–A) bands due to desorbed Xe+F excimer molecules have been observed. The triatomic Xe2F excimer emission has only been observed under low-energy excitation close to the lowest xenon exciton absorption band. A competition between ionic and charge-transfer reaction channels is followed as a function of the cluster sizes m and k.

PACS:
36.40.-c - Atomic and molecular clusters (see also 61.46.-w Nanoscale materials)
36.40.Vz - Optical properties of clusters
33.50.Dq - Fluorescence and phosphorescence spectra

Key words: ionic chromophores, excited state distributions, charge transfer reaction, doped rare-gas clusters, excimer molecule emission, fluorescense.

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