R,R' and B Absorption Linewidths and Phonon-Induced Relaxations in Ruby

スポンサーリンク

概要

• 論文の詳細を見る

• Widths and shapes of the three groups of absorption lines in ruby are measured in the 77-500°K temperature range. Temperature-dependent linewidths are successfully interpreted in terms of the direct and Raman relaxations. The observed asymmetric shapes of the B_3 and R_3' lines are shown to be due to the energy dependent one-phonon relaxation rate. Non-empirical calculations are made on transition probabilities and stress-induced changes in level splittings of the t^3_2^2<E>_1, ^2<T>_1 and ^2<T>_2 states. Orbit-lattice parameters are evaluated using point charge model with Watson's Hartree-Fock function for a free Cr^<3+> ion. Mixing of all the doublet states with d^3 electron configuration is taken into account. Agreement between calculation and experiment is surprisingly good. Cubic symmetry approximation and point charge model are shown to be very good. Some slight discrepancies between the calculated rates and experiment are explained by the deviation of the Debye model from a more realistic phonon spectrum deduced from the vibronic structure associated with the R lines.

• 社団法人日本物理学会の論文
• 1967-12-05

著者

• Kikuchi Minoru

  Toshiba Central Research Laboratory

• Kushida Takashi

  Toshiba Central Research Laboratory:(present)bell Telephone Laboratories

関連論文

• Localization of Electrons in Certain Random Lattices
• Numerical Study of Localization in Disordered Systems with ρ-like Atomic States
• Impurity Band Conduction with Strong Electron Correlations
• Statistical Origin of the Meyer-Neldel Rule in Amorphous Semiconductor Thin Film Transistors
• Localization of Electrons in Structurally Disordered Lattices
• Electronic States of Ionized Impurity-Pairs in Silicon
• Numerical Studies of Localization in Structurally Disordered Systems
• Optical Couble Resonance Experiments in Ruby
• R,R' and B Absorption Linewidths and Phonon-Induced Relaxations in Ruby

スポンサーリンク