SENSITIZED LUMINESCENCE IN ALKALI HALIDE CRYSTALS ACTIVATED WITH MERCURY- LIKE ACTIVATORS AND MANGANESE

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Trudy Inst. Fiz. i Astron., Akad. Nauk Eston. S.S.R.

OSTI ID:4151576

Schwartz, K K; Zirnitis, U A

The migration of energy between the impurity centers in alkali halide crystal phosphors is discussed. In the phosphor KCl-Tl, Pb the luminescence of the Pb/sup 2+/ ions may be observed at the excitation of the Tl/sup +/ ions. The energy transfer is conditioned by reabsorption. In the KCl and NaCl phosphors the possibility of energy transfer from Tl/sup +/,In/sup +/, Ga/sup +/, Pb/ sup 2+/, and Sn/sup 2+/ ions to Mn /sup 2+/ions was examined. The effective transfer of energy to Mn/sup 2/+ ions was observed from Pb/sup 2+/ ions in KCl and from Pb/sup 2+/, Tl/sup +/, and In/sup +/ ions in NaCl. It is shown that the sensitized luminescence phenomenon in the KCl-Pb, Mn and NaCl-Pb, Mn systems is due to the fact that the local concentrations of Pb and Mn in some regions of the crystal considerably exceed average concentrations. The effect of sensitization in these systems greatly depends on the physicochemical state of the phosphor. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-017146
• OSTI ID: 4151576
• Journal Information: Trudy Inst. Fiz. i Astron., Akad. Nauk Eston. S.S.R., Journal Name: Trudy Inst. Fiz. i Astron., Akad. Nauk Eston. S.S.R. Vol. Vol: No. 11
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
ACTIVATION
ENERGY
ENRICHMENT
EXCITATION
GALLIUM
IMPURITIES
INDIUM
IONS
LEAD
LUMINESCENCE
MANGANESE
MEASURED VALUES
MONOCRYSTALS
PHOSPHORS
PHYSICS
POTASSIUM CHLORIDES
SODIUM CHLORIDES
THALLIUM
TIN