Photochemical Reaction and Photoconductivity of Additively Colored KCl Crystals at Low Temperature
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概要
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The change in the photoconductivity of KCl crystals containing $F$ centers upon optical bleaching of the $F$ band has been investigated at low temperature. It was shown that the presence of $M$ centers is not responsible for the residue of the photoconductivity in the $F$ band region at low temperature. $F'$ centers were produced through a tunneling process when $F$ centers were optically excited at low temperature. The quantum yield of the process was dependent on the concentration of $F$ centers and was estimated to be less than 0.06 in a specimen containing $6\times 10^{16}$ cm-3 of $F$ centers. The residual photoconductivity in the $F$ band region at low temperature was found to result not from the absorption of photons in the $F$ band but from the absorption in a band overlapping the $F$ band. The suggested shape and position of the band are given.
- Physical Society of Japanの論文
- 1968-03-05
著者
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Ishii Takehiko
Department Of Material Physics Graduate School Of Engineering Science Osaka University
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Ishii Takehiko
Department of Physics, Tohoku University, Sendai
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Endo Teiichi
Department of Physics, Tohoku University, Sendai
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