RADIATION DAMAGE DEPENDENCE OF POSITRON LIFETIMES IN SODIUM HALIDE CRYSTALS

被引：16

作者：

WILLIAMS, TL

ACHE, HJ

机构：

[1] Department of Chemistry, Virginia Polytechnic Institute, Blacksburg

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 51卷 / 08期

关键词：

D O I：

10.1063/1.1672545

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Position lifetime spectra in NaCl and NaF single crystals were measured and analyzed as a function of the crystal defect concentration introduced by proton and gamma irradiation. In the irradiated sodium chloride samples a long-lived component was observed with a lifetime (πB) of 8.2 × 10-10 sec and an intensity (IB) of up to 28%. Thermal annealing of the sample caused a drastic reduction of the intensity of this component (I E) to about 10%. Similar observations were made in the positron lifetime spectra in the NaF system.

引用

页码：3536 / &

共 16 条

[1] ACHE HJ, TO BE PUBLISHED
[2] LONG LIFETIME OF POSITRONS IN IONIC CRYSTALS
BISI, A
FIORENTINI, A
ZAPPA, L
[J]. PHYSICAL REVIEW, 1963, 131 (03): : 1023 - &
[3] POSITRON ANNIHILATION IN ALKALI HALIDES
BISI, A
FIORENTINI, A
ZAPPA, L
[J]. PHYSICAL REVIEW, 1964, 134 (2A): : A328 - +
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[6] CUMMING JB, BNL6470 REP
[7] FIORENTINI A, 1967, POSITRON ANNIHILATIO, P95
[8] GOLDANSKII VI, 1965, FIZ TVERD TELA+, V6, P2641
[9] GOLDANSKII VI, 1966, FIZ TVERD TELA+, V8, P409
[10] GOLDANSKII VI, 1968, FIZ TVERD TELA, V6, P3301

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