Thermoluminescence and x-ray stimulated luminescence of CaF$sub 2$:Eu crystals
Journal Article
·
· Can. J. Phys., v. 51, no. 4, pp. 382-388
OSTI ID:4363829
The x-ray luminescence and thermoluminescence due to Eu ions in CaF/sub 2/ were investigated. Thermoluminescent glow curves of CaF/sub 2/ single crystals containing several different concentrations of europium were measured between 4.2 and 400 deg K. Spectral analysis of the two major glow peaks at 92 and 240 deg K shows that the luminescence is due mainly to Eu/sup 2+/ ions. The available evidence suggests the thermoluminescence of Eu/sup 2+/ in CaF/sub 2/ is a hole-type recombination process similar to the generally accepted mechanism for thermoluminescence from trivalent rare-earth ions in CaF/sub 2/. In addition to the Eu/sup 2+/ emission, lines are observed at lower energies in the x-ray luminescence spectra due to Eu/sup 3+/ ions in at least three different symmetry sites. (auth)
- Research Organization:
- Univ. of Western Ontario, London
- NSA Number:
- NSA-29-013234
- OSTI ID:
- 4363829
- Journal Information:
- Can. J. Phys., v. 51, no. 4, pp. 382-388, Journal Name: Can. J. Phys., v. 51, no. 4, pp. 382-388; ISSN CJPHA
- Country of Publication:
- Canada
- Language:
- English
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Related Subjects
*CALCIUM FLUORIDES-- LUMINESCENCE
CATIONS
CHEMICAL COMPOSITION
DOPED MATERIALS
EUROPIUM COMPOUNDS
GLOW CURVE
MONOCRYSTALS
N46300 --Instrumentation--Radiation Effects on Instrument Components
Instruments
or Electronic Systems
N50340* --Metals
Ceramics
& Other Materials--Plastics & Other Materials--Radiation Effects
PHOTON BEAMS
QUANTITY RATIO
RECOMBINATION
SPECTRA
THERMOLUMINESCENCE
X RADIATION
CATIONS
CHEMICAL COMPOSITION
DOPED MATERIALS
EUROPIUM COMPOUNDS
GLOW CURVE
MONOCRYSTALS
N46300 --Instrumentation--Radiation Effects on Instrument Components
Instruments
or Electronic Systems
N50340* --Metals
Ceramics
& Other Materials--Plastics & Other Materials--Radiation Effects
PHOTON BEAMS
QUANTITY RATIO
RECOMBINATION
SPECTRA
THERMOLUMINESCENCE
X RADIATION