New F -Type Color Center in CsBr Crystals Doped with Cl − Ions
1969; American Institute of Physics; Volume: 188; Issue: 3 Linguagem: Inglês
10.1103/physrev.188.1324
ISSN1536-6065
Autores Tópico(s)Crystal Structures and Properties
ResumoA new absorption band consisting of two components is found in additively colored CsBr crystals doped with ${\mathrm{Cl}}^{\ensuremath{-}}$ ions. It is suggested that the corresponding color center, called ${F}_{H}$, consists of an $F$ center adjacent to a ${\mathrm{Cl}}^{\ensuremath{-}}$ ion. Dichroic bleaching properties are described. The luminescence is characterized by a single Gaussian emission band, peaking at 1.5 eV and with a half-width of 0.17 eV. The temperature dependence of the emission is different for the two components of the excitation spectrum.
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