北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University;第75号

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珪岩・水晶・溶融石英の破壊に伴う発光の色について -結晶の圧電性の寄与-

三井, 雄太;柳谷, 俊

Permalink : http://hdl.handle.net/2115/49070
JaLCDOI : 10.14943/gbhu.75.109

Abstract

We observed clear fractoluminescence in crystalline quartzite, quartz crystal and fused silica at uniaxial compressional loading tests by commercial digital cameras. These fractoluminescence are composed of blue and red colors. In particular, a blue color does not appear in fractures of fused silica but appear in crystalline quartzite and quartz crystal, which implies that the piezoelectric charge and discharge play a key role in the blue-color fractoluminescence via excitation of N2 molecules.

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