Formation and Radiative Recombination of Free Excitonic Molecule in CuCl by Ruby Laser Excitation
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概要
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New emission bands called the M, N_1, N_2 and N_3 bands have been found near the band edge in CuCl single crystal with excitation by the two-photon absorption of a Q-switched ruby laser. All emission intensities show nonlinear dependences upon the excitation intensity. One of them, the M band located at λ3919 A at 4.2°K, is concluded as the radiative decay of a free excitonic molecule. The shape variation and peak shift to the low energy side of the M emission band with respect to the increase of the laser power are similar to those due to the raising of temperature. The line shape is an inverted replica of the Maxwell distribution. The system of the excitonic molecule has been concluded to have the effective temperature which is higher than the lattice temperature in the high density state of excitonic molecule. The mechanism of the radiative decomposition of the excitonic molecule has been discussed.
- 社団法人日本物理学会の論文
- 1970-09-05
著者
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GOTO Takenari
Department of Physics,Faculty of Science,Tohoku University
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OHTA Tatsuo
Department of Biochemistry, Niigata College of Pharmacy
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Ohta Tatsuo
Department Of Biochemistry Niigata College Of Pharmacy
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Ohta Tatsuo
Department Of Physics Faculty Of Science Tohoku University
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UETA Masayasu
Department of Physics,Faculty of Science,Tohoku University
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Goto Takenari
Department Of Physics Faculty Of Science Tohoku University
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Ueta Masayasu
Department Of Physics Faculty Of Science Tohoku University
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SOUMA Hirotoshi
Department of Physics, Faculty of Science, Tohoku University
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Souma Hirotoshi
Department Of Physics Faculty Of Science Tohoku University
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Souma Hirotoshi
Department Of Chemistry University Of Pennsylvania:the Institute Of Physical And Chemical Research
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Ueta Masayasu
Department Of Physics Faculity Of Science Tohoku University
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