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Excitonic Processes and Thermoluminescence in NaCl Crystals Doped with Mg or Mn
Author(s) -
Egranov A. V.,
Nepomnyachikh A. I.
Publication year - 1988
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.2221470131
Subject(s) - thermoluminescence , exciton , doping , excitation , irradiation , spectral line , analytical chemistry (journal) , monochromatic color , divalent , chemistry , materials science , luminescence , physics , optics , condensed matter physics , optoelectronics , chromatography , quantum mechanics , astronomy , nuclear physics , organic chemistry
Processes of defect creation by VUV‐excitation are studied by the thermoluminescence method. NaCl crystals doped with Mg or Mn are irradiated at 80 K by monochromatic VUV‐light in the region of 7 to 8 eV. Excitation spectra of the glow peaks at 195 K (NaCl‐Mg) and 220 K (NaCl‐Mn) have maxima at 7.5 and 7.4 eV, respectively. It is concluded that the TL excitation spectra correspond to the formation of an exciton near the divalent metal (Mg 2+ or Mn 2+ ) of the impurityvacancy complex. The decay of these excitons leads to formation α‐I z pairs at 80 K.