Semi-gas kinetics model for performance modeling of flowing chemical oxygen-iodine lasers (COIL)

IF 7.5 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Science China Physics, Mechanics & Astronomy Pub Date : 2004-05-01 DOI:10.1360/03yw0165

Zhi Gao, Limin Hu, Yiqing Shen

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Abstract

A semi-gas kinetics (SGK) model for performance analyses of flowing chemical oxygen-iodine laser (COIL) is presented. In this model, the oxygen-iodine reaction gas flow is treated as a continuous medium, and the effect of thermal motions of particles of different laser energy levels on the performances of the COIL is included and the velocity distribution function equations are solved by using the double-parameter perturbational method. For a premixed flow, effects of different chemical reaction systems, different gain saturation models and temperature, pressure, yield of excited oxygen, iodine concentration and frequency-shift on the performances of the COIL are computed, and the calculated output power agrees well with the experimental data. The results indicate that the power extraction of the SGK model considering 21 reactions is close to those when only the reversible pumping reaction is considered, while different gain saturation, models and adjustable parameters greatly affect the output power, the optimal threshold gain range, and the length of power extraction.

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用于流动化学氧碘激光器（COIL）性能建模的半气体动力学模型

本文提出了一种用于流动化学氧碘激光器（COIL）性能分析的半气体动力学（SGK）模型。在该模型中，氧碘反应气流被视为连续介质，不同激光能级的粒子的热运动对 COIL 性能的影响被包括在内，速度分布函数方程采用双参数扰动法求解。对于预混合流，计算了不同化学反应系统、不同增益饱和模型以及温度、压力、激发氧产量、碘浓度和频移对 COIL 性能的影响，计算得出的输出功率与实验数据吻合良好。结果表明，考虑 21 个反应的 SGK 模型的功率提取与只考虑可逆泵送反应时的功率提取接近，而不同的增益饱和度、模型和可调参数对输出功率、最佳阈值增益范围和功率提取长度有很大影响。

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来源期刊

Science China Physics, Mechanics & Astronomy PHYSICS, MULTIDISCIPLINARY-

CiteScore

10.30

自引率

6.20%

发文量

4047

审稿时长

3 months

期刊介绍： Science China Physics, Mechanics & Astronomy, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Physics, Mechanics & Astronomy, is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Reviews summarize representative results and achievements in a particular topic or an area, comment on the current state of research, and advise on the research directions. The author’s own opinion and related discussion is requested. Research papers report on important original results in all areas of physics, mechanics and astronomy. Brief reports present short reports in a timely manner of the latest important results.