Low Temperature Physics: 32, 1086 (2006); https://doi.org/10.1063/1.2389018 (6 pages)
Физика Низких Температур: Том 32, Выпуск 11 (Ноябрь 2006), c. 1426-1433    ( к оглавлению , назад )

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

Received July 7, 2006

Аннотация

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

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