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Time-resolved XEOL spectroscopy of new scintillators based on CsI

1992; American Institute of Physics; Volume: 63; Issue: 1 Linguagem: Inglês

10.1063/1.1142614

1527-2400

A. Belsky, А. Н. Васильев, V. V. Mikhaĭlin, A. Gektin, N. Shiran, A. Rogalev, É.I. Zinin,

Nuclear Physics and Applications

Spectral and kinetic properties of the fast intrinsic ultraviolet luminescence of CsI single crystals either pure or doped by Br, Cl, Rb, or K, studied under different types of excitation at temperatures from 80 to 550 K, are presented. Since conventional models of intrinsic luminescence in their ‘‘pure’’ form fail to explain the observed properties of the UVL, a new one should be worked out taking into account collective interaction of neighboring excitations and defects, created by ionizing particles, which form clusters of excitations. It has been shown that luminescence decay time can be controlled by doping with homologs.