New Measurement Methods of Dust Charge Based on Infrared Extinction Theory
The dust charge is a very important physical quantity and it needs to be measured accurately to understand the physical characteristics of dusty plasma.Through analyzing the simulated charged dust extinction signal,a new method to measure the dust charge quickly and without interference is sought.The result shows that the scattering mechanism in the far infrared band is low in absorption efficiency,it is necessary to increase the power attenuation by multiplying the light path to realize the measurement of dust charge,the upper limit of allowable particle size is 1μm.Resonance absorption mechanism in the middle infrared band,however,increases its absorption efficiency by 4 orders of magnitude,which allows the dust charge measurement with the spectral analysis method according to the dispersion effect in addition to the power attenuation method,the spectral resolution of single charge is 0.01cm-1.The feasibility of measurement dust charge based on infrared extinction theory is shown theoretically.
dusty plasma charge extinction scattering
Xiaobin Wang Bin Xu Zhengzheng Ma Shunxing Hu
Science Island Branch of Graduate School;University of Science and Technology of China;Hefei,China;N National Key Laboratory of Electromagnetic Enviroment China Research Institute of Radiowave Propagat Key Laboratory of Atmospheric Optics Anhui Institute of optics and Fine Mechanics,Chinese Academy of
国际会议
杭州
英文
1-4
2018-12-03（万方平台首次上网日期，不代表论文的发表时间）