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Self‐Trapped Exciton Luminescence after Tunnelling of V k and Na o Centers in CsI:Na Crystals
Author(s) -
Imanaka K.,
Kayal A. H.,
Mezger A. C.,
Rossel J.
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.2221080220
Subject(s) - quantum tunnelling , luminescence , exciton , recombination , atomic physics , electron , excitation , polarization (electrochemistry) , physics , population , condensed matter physics , chemistry , optics , quantum mechanics , biochemistry , demography , sociology , gene
Tunnelling recombination luminescence in CsI :Na crystals is studied by means of linear polarization, magnetic circular polarization, and optical detection of ESR either under or after X‐ray irradiation. Results are well interpreted in terms of a self‐trapped exciton (STE) scheme as the final emitting state of tunnelling recombination; here, in the present case with tunnelling, the population for each STE sublevel is derived from the thermal equilibrium spin populations of trapped electrons (Na O ) and holes (V k ) instead of the usual creation rate in UV light excitation case.