Charged Particle Emission and Luminescence upon Bending Fracture of Granite

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概要

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• Charged particle emission and luminescence upon bending fracture of granite were investigated in a vacuum. In most cases, sharp peaks of charged particle emission and luminescence were observed at the very instant of final fracture, and continued for several seconds. However, it sometimes happened that the bending fracture needed about 10-20 ms, and a sharp peak of charged particle emission was also observed at the beginning of the decrease in the applied load, suggesting that initiation and propagation of microcrack induced the charged particle emission. In both cases, luminescence was observed only at the instant of final fracture. Luminescence spectra were composed of two bands centered at about 2.1 and 3.0 eV, and each band showed different decay profiles, suggesting the contribution of the different defect centers.

• Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
• 1998-06-15

著者

• KAWAGUCHI Yoshizo

  Chugoku National Industrial Research Institute

• Kawaguchi Yoshizo

  Chugoku National Industrial Research Institute,

関連論文

• Characteristics of Excimer-Laser-Induced Luminescence of the Ground Surface of Silica Glass
• Fractoluminescence Spectra in Crystalline Quartz
• Charged Particle Emission and Luminescence upon Bending Fracture of Granite

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