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Triplet State Paramagnetic Resonance and Optical Absorption of Z 2 Color Centers
Author(s) -
Adlhart W.,
Gehrer G.,
Lüscher E.
Publication year - 1974
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.2220660214
Subject(s) - electron paramagnetic resonance , metastability , paramagnetism , center (category theory) , chemistry , absorption (acoustics) , resonance (particle physics) , symmetry (geometry) , f center , triplet state , irradiation , analytical chemistry (journal) , atomic physics , crystallography , nuclear magnetic resonance , condensed matter physics , physics , optics , molecule , geometry , mathematics , organic chemistry , chromatography , nuclear physics
Abstract A metastable Z 2 center triplet state excitable by optical irradiation has been found in KCl:Ca, KCl:Sr, NaCl:Ca, NaCl:Sr. Electron spin resonance measurements yield the following symmetry axes: [100] for centers in KCl:Ca, KCl:Sr, NaCl:Ca; [100], [011], and [0 1 1] for NaCl:Sr. Optical measurements of Z 2 centers in KCl:Ba show the existence of a [100] symmetry axis. Center models are discussed.