Sonoluminescence in X-Rayed KCI Crystals
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概要
- 論文の詳細を見る
Luminescence induced by l00kHz ultrasonic excitation in X-rayed KCIcrystals which previously are heated in chlorine vapor is observed at room tem-perature. Under prolonged excitation by a constant ultrasonic stress amplitude,the luminescence continues during initial several lens seconds. Simultaneousmeasurements of internal friction are carried out by the Marx's method in orderto reveal a role of dislocation motion in the luminescent processes. Existence ofcritical strain amplitudes was found above which the luminescence becomes notableand the internal friction indicates an abrupt increase. The results are discussedwith the vibrating string model of dislocation motion, and it is concluded thatexcitation of color center's electrons is caused by unpinning of dislocation andthat the unpinning process annihilates defects that have pinned the dislo-cation.
- 社団法人日本物理学会の論文
- 1982-12-15
著者
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FUTAMA Hideo
Department of Applied Physics,Faculty of Science,Science University of Tokyo
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Futama Hideo
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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MIYAKE Isao
Department of Applied Physics,Faculty of Science,Science University of Tokyo
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Miyake Isao
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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