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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Laser-Induced Incandescence Study on the Metal Aerosol Particles as the Effect of the Surrounding Gas Medium
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Laser-Induced Incandescence Study on the Metal Aerosol Particles as the Effect of the Surrounding Gas Medium

机译：周围气体介质对金属气溶胶颗粒的激光诱导白炽研究

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摘要

The fundamental heat transfer phenomena caused by the 1064 nm pulsed laser irradiations on the molybdenum aerosol particles were investigated by monitoring the time evolutions of the incandescence spectra using an ICCD detector with a multichannel spectrograph.The particle temperatures were evaluated from the incandescence spectra with the Planck function,and the cooling processes of the laser-heated particles were investigated.By measuring the decrease in the laser-heated particle temperatures with different surrounding media,the roles of the heat transfer processes such as vaporization,thermal radiation,and heat conduction to the surrounding media were discussed.The influences of the vaporization processes on the total heat transfer phenomena were investigated by monitoring the emissions of the constituent molybdenum atoms in the laser-induced incandescence spectra of the aerosol particles and also by investigating the relationships between the intensity of the incandescence and the fluence of the 1064 nm pulsed laser.The calculations using the theory of heat conduction suggested that the diameters of the particles produced by the photolysis of Mo(CO)_6 depended on the nature of the surrounding gases.
机译：通过使用带有多通道光谱仪的ICCD检测器监测白炽光谱的时间演变，研究了1064 nm脉冲激光辐照钼气溶胶粒子所引起的基本传热现象，并通过普朗克白炽光谱评估了粒子温度通过测量在不同周围介质下激光加热粒子温度的降低情况，研究了热传递过程如汽化，热辐射和热传导对热传导的作用。通过监测气溶胶颗粒的激光诱导白炽光谱中的组成钼原子的排放以及研究强度之间的关系，研究了汽化过程对总传热现象的影响。白炽灯和1064 nm脉冲激光的能量密度。使用热传导理论进行的计算表明，Mo（CO）_6光解产生的粒子直径取决于周围气体的性质。

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