Photostimulated Reorientation of H       z    [001]     (Pb 2+ ) Centres in a KCl:PbCl 2  Crystal | Zendy

Nagirnyi V. | Zendy; Soovik T. | Zendy; Zazubovich S. | Zendy

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Photostimulated Reorientation of H z [001] (Pb 2+ ) Centres in a KCl:PbCl 2 Crystal

Author(s) -

Nagirnyi V.,

Soovik T.,

Zazubovich S.

Publication year - 1984

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.2221250115

Subject(s) - excited state , ion , chemistry , atomic physics , crystal (programming language) , vacancy defect , atom (system on chip) , polarization (electrochemistry) , analytical chemistry (journal) , crystallography , physics , organic chemistry , computer science , embedded system , programming language , chromatography

Temperature dependences of polarization and kinetic characteristics of luminescence are investigated for Pb 2+ ions perturbed by a (nnn) cation vacancy and an interstitial chlorine atom (H z [001] (Pb 2+ ) centres) in a KCl:PbCl 2 crystal. At T > 110 K the reorientation of these centres in the triplet excited state of the Pb 2+ ion stimulated by polarized UV radiation becomes evident in the polarization spectra and decay kinetics of the A T emission. It results neither in the depolarization of the emission nor in the „alignment” of the centres. Most probably the effect can be explained by a strong covalent interaction between the excited Pb 2+ ion and an interstitial, and it is caused by the dissociation of the two‐component defect near the Pb 2+ ion and the following jump of the interstitial chlorine atom into one of the 〈100〉 directions perpendicular to the {Pb 2+ ‐v c − } axis.

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