Thermoluminescence and F-center annealing in alkaline-earth fluoride crystals after reactor irradiation at low temperature

Journal Article · Sat Sep 15 04:00:00 EDT 1979 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.438614· OSTI ID:5889625

Atobe, K

Thermoluminescence is related to the F-center annealing stage in undoped alkaline-earth fluoride (CaF/sub 2/, SrF/sub 2/, and BaF/sub 2/) single crystals irradiated at 20 K with reactor neutrons. The temperature of glow peak maxima are classified in four groups (P-1--4); P-1: 110--130 K, P-2: 134--152 K, P-3: 183--200 K and P-4: 201--245 K with a heating rate of 4 K/min. at temperatures ranging 77--300 K. These temperatures of peak maxima correspond well to decay stages of F-centers. F-centers play an important role as recombination centers in the TL process. The main TL emission spectrum of P-1--4 peaks consists of the intrinsic luminescence as well as the case of the x-ray emission spectrum at 77 K. It is revealed that these TL emission bands near 300 nm of P-1, 2, and 3 peaks are due to the radiative recombination of (V/sub K/+F) and (H+F) reactions, respectively.

• Research Organization: Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka, Japan
• OSTI ID: 5889625
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 71:6; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM FLUORIDES
BARYONS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
COLOR CENTERS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
ELEMENTARY PARTICLES
F CENTERS
FERMIONS
FLUORIDES
FLUORINE COMPOUNDS
HADRONS
HALIDES
HALOGEN COMPOUNDS
HEAT TREATMENTS
LUMINESCENCE
MONOCRYSTALS
NEUTRONS
NUCLEONS
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
RADIATION EFFECTS
STRONTIUM COMPOUNDS
STRONTIUM FLUORIDES
THERMOLUMINESCENCE
VACANCIES
VERY LOW TEMPERATURE