Ohgaku T, Nakamura S, Inabe K
Graduate School of Natural Science and Technology, Kanazawa University, 2-40-20 Kodatsuno, Kanazawa 920-8667, Japan.
Radiat Prot Dosimetry. 2006;119(1-4):98-101. doi: 10.1093/rpd/nci610. Epub 2006 Jun 8.
Effect of surrounding gas on mechanoluminescence (ML) of non-irradiated KCl:Ca2+ and X-ray irradiated one has been investigated in order to clarify the ML due to dislocation movement. For both samples, the ML appears only in the narrow pressure range from 10 to 10(3) Pa with a peak at 133 Pa. Emission spectrum of ML for both samples in Ne gas has indicated a prominent peak at 580 nm that coincides with a strong line of Ne gas. Above results indicate that the observed ML is caused by electric discharge at the crystal surface. Discussion is also made on the effect of Ca2+ on both the ML intensity and the charges carried with dislocations.
为了阐明由位错运动引起的机械发光（ML），研究了周围气体对未辐照的KCl:Ca²⁺以及X射线辐照后的KCl:Ca²⁺的机械发光的影响。对于这两种样品，ML仅在10至10³帕的狭窄压力范围内出现，峰值出现在133帕。两种样品在氖气中的ML发射光谱表明，在580纳米处有一个突出的峰值，这与氖气的一条强谱线重合。上述结果表明，观察到的ML是由晶体表面的放电引起的。还讨论了Ca²⁺对ML强度和位错携带电荷的影响。
