Luminescence excitation spectra of pure and activated KCl
J E A Alderson; R K Dimond; J E A Alderson; Department of Physics, University of Western Australia, Nedlands, W. Australia; R K Dimond; Department of Physics, University of Western Australia, Nedlands, W. Australia
Журнал:
British Journal of Applied Physics
Дата:
1964-01-01
Аннотация:
Excitation spectra are presented for KCl and KCl:Tl at room temperature and at -160°C over a range of energies from 4.5 to 10.5 eV covering regions of impurity, exciton and `band to band' excitation. A possible exciton level at 7.4 eV is indicated from the excitation spectra. At 8.0 eV a luminescence independent of activator concentration may be due to energy transfer by excitons. A new excitation peak at 6.7 eV is observed in thallium activated crystals grown in air.
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