Luminescencs of Alkali Halide Crystals Induced by UV-Light at Low Temperature
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概要
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The luminescence of pure alkali halide crystals induced by the excitation with UV-light in the fundamental absorption region at low temperature is observed in NaCl, KCl, RbCl, NaBr, KBr,RbBr and KI. In KCl, RbCl and NaBr one emission band, in NaCl, KBr and RbBr two emission bands and in KI three emission bands are induced at 11°K. All of the emission bands, except one in KI, are confirmed to arise from the self-trapped exciton, or the V_k^- center. The quantum efficiencies for the luminescence are estimated as small as 0.1 to 0.2 in KCl, KBr and RbCl and a little larger in the other crystals. The excitation spectra and temperature dependence of the intensity of the luminescence are measured and the results are discussed in connection with the properties of the V_k^- center.
- 社団法人日本物理学会の論文
- 1969-12-05
著者
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Kojima Tadanobu
Second Department Of Physics Faculty Of Science Tohoku Univerisyt
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Kojima Tadanobu
Second Department Of Physics Tohoku University
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IKEZAWA Mikihiko
Second Department of Physics, Tohoku University
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Ikezawa Mikihiko
Second Department Of Physics Tohoku University
関連論文
- On the Nature of the Anomalous Emission C^* in KI:Ag^- and KCl:Ag^-(Li)
- Studies on Ag- Centers in Alkali Halides. : III. Polarization and Decay-Time of Luminescence
- Studies on Ag^- Centers in Alkali Halides. : II. Ag^-(Na) Centers in KCl
- Studies on Ag^- Centers in Alkali Halides. : I. Nature of Optical Transitions: KCl
- Relaxed Excited State of the F-Center and Its Interaction with Divalent Impurity Complexes
- The Triplet State of Z_2 Centers
- Emission Sidebands of Eu^-Doped Alkali Halides
- Studies on Ag^- Centers in AlkaliHalides. : V. Ag^-(Na)_2 Centers
- Quasi-Jahn-Teller Optical Absorption Line Shape due to Transition from A_1g to (A_ + T_)×t_ System
- Luminescencs of Alkali Halide Crystals Induced by UV-Light at Low Temperature
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