Development of Detection of Molecular Velocity and Pressure by Laser Induced Fluorescence

激光诱导荧光检测分子速度和压力的进展

• 批准号: 62850039
• 负责人: TAKAGI Toshimi
• 金额: $ 4.93万
• 依托单位: Faculty of Engineering, Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62850039/
• 关键词: Laser induced Fluorescence; Velocity; Pressure; Nonintrusive Measurement; 気体分子; UV光

Detection of velocity and pressure by non-intrusive method using induced fluorescence were investigated.Velocity of gaseous molecules was detected using the relation between the fluorescence intensity and the velocity.Fluorescence intensity is related by the ralative position between the absorption line shape of the molecules and the incident laser light wave length. When the molecules are moving, the relative position of the absorption line and the incident laser light wave length is changed due to the Doppler effect.Numerical simulation of the relation between fluorescence intensity and velocity, and the experimental verification were conducted to investigate the validity of the measureing method.Pressure detection was conducted by use of the fluorescence from iodine molecules excited by the UV light source(near 190nm). The relation between fluorescence intensity and pressure was correlated experimentally and the validity of the measureing method was investigated. The mechanism of the pressure dependence of the fluorescence intensity was discussed.

研究了利用诱导荧光的非侵入式方法检测速度和压力。利用荧光强度与速度之间的关系来检测气体分子的速度。荧光强度与分子的吸收线形状和入射激光波长之间的相对位置有关。当分子运动时，由于多普勒效应，吸收线的相对位置和入射激光波长发生变化。通过数值模拟荧光强度与速度的关系，并通过实验验证验证测量方法的有效性。利用紫外光源（190nm附近）激发的碘分子荧光进行压力检测。通过实验关联荧光强度与压力之间的关系，并研究了测量方法的有效性。讨论了荧光强度的压力依赖性机制。

项目成果

S.Hirai: The Joint Meeting of Australia/New Zealand and Japanese sections/Combustion Institute.

S.Hirai：澳大利亚/新西兰和日本分会/燃烧研究所联席会议。

T. Ueno: "Nonintrusive Gas Pressure Measurement by Induced Fluoresence Spectrum from Iodine" 26th National Heat Transfer Symposium of Japan. to be appear. (1989)

T. Ueno：“通过碘诱导荧光光谱进行非侵入式气体压力测量”，第 26 届日本全国传热研讨会。

S. Hirai: "Detection of Molecular Velocity and Pressure by Induced Fluorescence" The Joint Meeting of Australia/New Zealand Japanese sections / Combustion Inst.to be appear. (1989)

S. Hirai：“通过诱导荧光检测分子速度和压力”澳大利亚/新西兰日本部门/燃烧研究所联席会议即将发表。

S.Hirai: Optics Letters.

S.Hirai：《光学快报》。