DIRECT OBSERVATION OF CRYSTAL IMPERFECTIONS IN KCl SINGLE CRYSTAL DUE TO ELECTRON AND X-RAY IRRADIATION

Journal Article · Fri Mar 01 04:00:00 EST 1963 · J. Phys. Soc. Japan

OSTI ID:4630407

Hibi, T; Yada, K; Kawamata, Y

Electron microscope observations were made of crystal imperfections caused by electron and x irradiation in thin KCl single crystals made by three different methods. In KCl crystal made from its water solution, loop structures appeared and disappeared and then small cubic cavities appeared under weak electron irradiation, while large cubic cavities appeared directly under intense electron irradiation. In KCl crystal made by electrolytic etching, parallel pair dislocation lines always appeared besides loop structures and then disappeared under weak electron irradiation, while small bright specks appeared under intense electron irradiation. In KCl crystal made by water etching, dislocation loops first appeared and then loop structures appeared and then disappeared under weak and also intense electron irradiation. In x irradiated KCl crystal made from water solution, loop structures and dislocation lines appeared and then disappeared, while large cavities were rarely observed under intense x irradiation. The mechanism of coagulation of vacancies is discussed. (auth)

• Research Organization: Tohoku Univ., Sendai
• NSA Number: NSA-17-037627
• OSTI ID: 4630407
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 18: Suppl. III
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CRYSTALS
DEFECTS
DISLOCATIONS
ELECTROLYSIS
ELECTRON BEAMS
ELECTRON MICROSCOPY
ETCHING
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
MONOCRYSTALS
POTASSIUM CHLORIDES
PRODUCTION
SOLUTIONS
VACANCIES
WATER
X RADIATION