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Luminescence decay and delayed spectra of CaWO 4 single crystals
Author(s) -
Scharmann A.,
Schwarz G.
Publication year - 1970
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.19700420234
Subject(s) - luminescence , spectral line , polaron , debye , excitation , electron , atomic physics , materials science , debye model , chemistry , physics , condensed matter physics , nuclear physics , optoelectronics , quantum mechanics , astronomy
Luminescence decay and delayed spectra of single crystals have been measured under 15 keV electron pulse excitation. Significant differences in the spectral decay for temperatures below and above Debye temperature are observed. For low temperatures ( T < θ D ) the delayed spectra show a pronounced red shift during decay. The results are discussed in the model of the “small polaron”.