KONG Xiang-gui, CHEN Bao-jiu, XU Wu, HUANG Shi-hua, FAN X W, CHAO Wang-he. Failure of Raman Scattering Selection Rule and State Density in PbF<sub>2</sub>+WO<sub>3</sub>+GeO<sub>2</sub> Glass Ceramics[J]. Chinese Journal of Luminescence, 2000,21(4): 373-375
KONG Xiang-gui, CHEN Bao-jiu, XU Wu, HUANG Shi-hua, FAN X W, CHAO Wang-he. Failure of Raman Scattering Selection Rule and State Density in PbF<sub>2</sub>+WO<sub>3</sub>+GeO<sub>2</sub> Glass Ceramics[J]. Chinese Journal of Luminescence, 2000,21(4): 373-375DOI:
The calculation of dielectric correlation function in PbF
2
+WO
3
+GeO
2
(PWG)glass ceramics was proposed.It shows that Raman scattering selection-rules are broken by the short coherent length of the right vibrating modes in the disorder materials.Expression formula of first order Raman scattering intensity was derived and analyzed based on state density function and amplitude change of right vibrating mode with frequencies.
关键词
玻璃陶瓷喇曼选择定则态密度
Keywords
glass ceramicsRaman scattering selection-rulestate density