外文题目: Vortices formation induced by femtosecond laser filamentation in a cloud chamber filled with air and helium
作者: 刘永宏; 孙海轶; 鞠晶晶; 田野; 白亚锋; 王成; 王铁军; 刘建胜; 陈瑞良; 李儒新
刊名: Chin. Opt. Lett.
年: 2016 卷: 14 期: 3 文章编号：31401
英文关键词:

SNOW FORMATION; PULSES; CONDENSATION; GASES; MEDIA
英文摘要:
We report on the experimental observation of the airflow motion induced by an 800 nm, 1 kHz femtosecond filament in a cloud chamber filled with air and helium. It is found that vortex pairs with opposite rotation directions always form both below and above the filaments. We do not observe that the vortices clearly formed above the filament in air just because of the formation of smaller particles with weaker Mie scattering. Simulations of the airflow motion in helium are conducted by using the laser filament as a heat source, and the simulated pattern of vortices and airflow velocity agree well with the experimental results.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.3788/COL201614.031401


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