Luminescence and Color Center Foramation by the Optical Conversion of STE in KBr and NaCI

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概要

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• The optical conversion of self trapped excitons (STE) from 'I: state to "I:state has been confirmed by observing the o emission spectra in KBr and Nailsingle crystals under the double excitation by a pulsed electron beam and aQ-switched ruby laser light. The conversion efficiencies are 0.3f0.l and 0.6.[0.lfor KBr (5.8 K) and Nail (6.5 K), respectively, and decrease at higher tempera-tures. From their temperature dependence, thermal activation energies for thequenching of the conversion are estimated to be 5 .[. l meV (KBr) and 11 -42 meV(NaCl). The conversion efficiency from the STE to the F centers is 0.7.50.2 inKBr. Possible relaxation process of the STE is discussed.

• 社団法人日本物理学会の論文
• 1978-12-15

著者

• YOSHINARI Takehisa

  Department of Physics, Faculty of Science, Yamagata University

• HIRAI Masamitsu

  Department of Applied Physics,Faculty of Engineering,Tohoku University

• Yoshinari Takehisa

  Department Of Physics Faculty Of Science Tohoku University

• IWANO Hideaki

  Department of physics,Faculty of Science,Tohoku University

• Iwano Hideaki

  Department Of Physics Faculty Of Science Tohoku University

• Hirai Masamitsu

  Department Of Applied Physics Faculty Of Engineering Tohoku University

• Hirai Masamitsu

  Department of Physics,Faculty of Science,Tohoku University

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