LOW-TEMPERATURE ANNEALING OF THE X-RAY-INDUCED VOLUME EXPANSION AND COLORATION OF LiF

Journal Article · Mon Apr 20 04:00:00 EST 1964 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.134.A485· OSTI ID:4057556

Mascarenhas, S; Wiegand, D A; Smoluchowski, R

It has been shown previously that both DELTA V/V and the density of F centers produced by x irradiation of LiF at 80 deg K anneal out partially near 130 deg K. Upon reirradiation at 80 deg K the F Band quickly recovers while 4V/V does not recover. In the present study, an additional annealing stage of DELTA V/V and the F band was found near 270 deg K. Upon reirradiation at 80 deg K after annealing at 270 deg K, neither DELTA V/V or the F band recover in contrast to the recovery after annealing at 130 deg K, The irreversibility of the 270 deg K annealing of the F band indicates vacancy annihilation which apparently does not occur at 130 deg K. The formation of M centers at the higher temperature suggests vacancy motion. The fractional annealing at 130 deg K was found to be smaller than in previous work, presumably because of different sample perfection before irradiation. (auth)

• Research Organization: Univ. of Sao Paulo, Brazil
• NSA Number: NSA-18-016107
• OSTI ID: 4057556
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 134; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
CONFIGURATION
COUNTERS
LIQUIDS
MEASURED VALUES
RADIOACTIVITY
WEIGHT