Dependence of photon emission accompanying the fracture of silica glass on surrounding gas pressure

Abstract

Photon emission (PE) accompanying the fracture of silica glass was measured under various pressures of surrounding gas (10-4 Pa to 105Pa). When the gas pressure was increased, 450nm-PE and 650nm-PE intensities were decreased. In contrast, 337nm-PE was observed due to the surrounding gas discharge under 100 and 1000 Pa. The result implies that the surrounding gas has some different effects on the PE.