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Conversion of F‐H A Pairs into α‐I A Pairs in KBr:Li and KBr:Na X‐Rayed at 80 K
Author(s) -
Dauletbekova A.,
Elango A.
Publication year - 1981
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221080202
Subject(s) - impurity , ion , irradiation , analytical chemistry (journal) , chemistry , atomic physics , crystallography , physics , nuclear physics , organic chemistry , chromatography
An optical method is used to investigate the dependence of the number of defects, created by X‐irradiation at 80K (F, α, H A , V 4 , V 4A , and I A , centres), on the impurity concentration in KBr:Li and KBr:Na. It is revealed that the amount of α‐I A pairs in the total anion defect number increases (approximately up to 90%) and the amount of F‐H A pairs decreases with the increase of the impurity concentration. As a reason the tunnel recharge of neutral primary F‐H A pairs into charged α‐I A pairs is considered, the probability of which increases with the decrease of the distance between the partners (i.e. with the enhancement of the impurity concentration).