THE COEFFICIENT OF LINEAR EXPANSION OF IRRADIATED ALKALI HALIDE CRYSTALS

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Soviet Phys.-Cryst. (English Transl.)

OSTI ID:4757700

Anokhina, I N; Berzina, I G; Savintsev, P A

Radiation effects on the coefficients of linear expansion of NaCl, KCl, and KBr are discussed. Changes in the coefficients of linear expansion of the crystals irradiated at room temperature were studied over the temperature range 100 to 500 deg C. It was found that the coefficients of linear expansion increased when measured immediately after irradiation, and the increase was more noticeable at the higher temperatures. The coefficient of linear expansion of the irradiated crystals decreased with increasing duration of annealing, and after 8 hr equaled the initial value corresponding to a nonirradiated crystal. On further annealing the coefficient continued to decrease and reached a constant value after 28 hr. It was concluded that the decrease in the coefficient of linear expansion with time after irradiation can be explained by a change in the density of defects, and in particular a change in the density of dislocations. (P.C.H.)

• Research Organization: Tomsk Polytechnic Inst., USSR
• NSA Number: NSA-17-014367
• OSTI ID: 4757700
• Journal Information: Soviet Phys.-Cryst. (English Transl.), Journal Name: Soviet Phys.-Cryst. (English Transl.) Vol. Vol: 7
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANTINEUTRINOS
BETA PARTICLES
CHEMISTRY
CRYSTALS
DEFECTS
DISLOCATIONS
IRRADIATION
LEPTONS
NEUTRINOS
POTASSIUM BROMIDES
POTASSIUM CHLORIDES
QUANTUM MECHANICS
RADIATION EFFECTS
SODIUM CHLORIDES
TEMPERATURE
TRANSIENTS
VACUUM