气溶胶粒子热晕的实验

The Experiment of Thermal Bloondng Induced by Aerosols

报道了在气溶胶室中首次观察到的群体气溶胶粒子吸收激光能量产生的热晕效应的实验。在真实大气中用电动喷枪注入相当浓度的气溶胶粒子为去离子水，连续波Ａｒ＋激光，在实验中发现随着粒子浓度的增加，从实验仓中出射的激光光斑重心下移，并且随着粒子浓度的减少，光斑逐渐上移，位置复原。

the peper reports the experment result of thermal blooming effect, which is induced by particle group absorbing energy of laser propagating through aered cell. Particles injected to the cell with a elastic sprayer are made of pure water. Laser is a continous wave Ar+ Laser. When the density of droplet increase,the laser beam outputing form the cell moves down,because of the convesion of air beated by the aerosol absorbing ther energy. When the density of particles decreases, the beam will go back to the formlyer location.