Light Scattering Study of the Elementary Process in the Crystal Growth from Melt.

熔体晶体生长基本过程的光散射研究。

• 批准号: 63460032
• 负责人: YAGI Toshirou
• 金额: $ 4.67万
• 依托单位: Hokkaido University (1989)Kyushu University (1988)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63460032/
• 关键词: Crystal Growth; Raman Scattering; Hyper-Raman scattering; Light Scattering; Elementary Process; Melt; Melt; Growth; 低周波モード; 固ー液界面; イオン結晶; 準弾性散乱光

(1)Hyper-Raman scattering system has been completed.It is very important in the present project to observe a position sensitive spectrum from the interface region between the solid (crystal) and the melt phases. According to our several preliminary experiments and also to a numerical simulation, it was found that there exists a very strong elastic scattering light in the interface region due to the considerable difference in the refractive indices of the both phases. In many cases the elastic component was so strong that it covered and distorted heavily the low frequency component of the spectrum of the light scattered from the interface redon, which would be essential for the dynamics of the elementary process of the crystal growth from the melt. We have succeeded to build-up newly a hyperraman scattering system capable to observe the low-frequency component of the spectra without any influence of the strong elastic light.(2)The observation of the spectra of the crystal-melt system.Using a crystal system with center of symmetry, the hyper-Raman scattering spectra of the interface region have been observed. On the way of the present research, the references shown in the next pace were published with the aids of the present grant.

(1)超拉曼散射系统已经完成。从固相(晶体)和熔体相的界面区域观察位置敏感光谱在本项目中非常重要。根据我们的几次初步实验和数值模拟，发现由于两相的折射率差异很大，界面区域存在非常强的弹性散射光。在许多情况下，弹性成分非常强，以至于它覆盖并严重扭曲了从界面雷东散射的光谱的低频成分，这对于熔体晶体生长的基本过程的动力学至关重要。我们成功地建立了新的超拉曼散射系统，能够在不受强弹性光影响的情况下观察光谱的低频分量。(2)晶体-熔体系统光谱的观察。使用晶体具有对称中心的系统，观察到了界面区域的超拉曼散射光谱。在目前的研究过程中，下一步显示的参考文献是在目前的资助的帮助下发表的。

项目成果

Toshirou YAGI: "Raman Scattering Spectra of Internal Modes of Ferroelectric Deuterated Dicalcium Strontium Propionate, Ca_2Sr- (C_2D_5CO_2)_6" Ferroelectrics, 89 pp.61-68, 1989.

Toshirou YAGI：“铁电氘化丙酸二钙锶，Ca_2Sr- (C_2D_5CO_2)_6 内部模式的拉曼散射光谱”铁电体，89 页.61-68，1989。

Toshirou YAGI: "On the omega -q relation of the Soft Mode of KDP Studied by Light Scattering under a High Pressure." J.Phys. Soc. Jpn., 59 pp.1430-1437, 1990.

Toshirou YAGI：“关于高压下光散射研究的 KDP 软模式的 omega-q 关系。”

八木駿郎: J.Phys.Soc.Jpn.60(予定). (1990)

Shunro Yagi：J.Phys.Soc.Jpn.60（计划）（1990）。

真田瑞穂: "球面Fabry-Perot干渉計とマイクロコンピュ-タ-による高分解能Brillouin散乱観測システム" 分光研究. 38. 113-121 (1989)

Mizuho Sanada：“使用球形法布里-珀罗干涉仪和微型计算机的高分辨率布里渊散射观测系统”光谱研究 38. 113-121 (1989)。

八木駿郎: "On the ω-q Relation of the Soft Mode of KDP Studied by Light Scattering under a High Pressure" Journal of the Physical Society of Japan. 59. 1430-1437 (1990)

Shunro Yagi：“关于高压下光散射研究的 KDP 软模式的 ω-q 关系”日本物理学会杂志 59. 1430-1437 (1990)。