中国物理B ›› 2010, Vol. 19 ›› Issue (12): 125202-125202.doi: 10.1088/1674-1056/19/12/125202
郑坚1, 李志超2, 郭亮2, 丁永坤3, 尹强3, 蒋小华3, 李三伟3, 杨冬3, 王哲斌3, 章欢3, 刘永刚3, 詹夏宇3, 唐琦3
Li Zhi-Chao(李志超)a)b), Zheng Jian(郑坚) a)†, Ding Yong-Kun(丁永坤)b), Yin Qiang(尹强)b), Jiang Xiao-Hua(蒋小华) b), Li San-Wei(李三伟)b), Guo Liang(郭亮)a)b), Yang Dong(杨冬) b), Wang Zhe-Bin(王哲斌)b), Zhang Huan(章欢)b), Liu Yong-Gang(刘永刚)b), Zhan Xia-Yu(詹夏宇) b), and Tang Qi(唐琦)b)
摘要: In order to produce millimeter-scale plasmas for the research of laser-plasma interactions (LPIs), gasbag target is designed and tested on Shenguang-III prototype laser facility. The x-ray pinhole images show that millimeter-scale plasmas are produced with the gasbag. The electron temperature inferred from the stimulated Raman scattering (SRS) spectrum is about 1.6 keV. The SRS spectrum also indicates that the electron density has a flat region within the duration of 200 ps. The obvious differences between the results of the gasbag and that of the void half hohlraum show the feasibility of the gasbag target in creating millimeter-scale plasmas. The LPIs in these millimeter-scale plasmas may partially mimic those in the ignition condition because the duration of the existence of a flat plasma density is much larger than the growth time of the two main instabilities, i.e., SRS and stimulated Brillouin scattering (SBS). So we make the conclusion that the gasbag target can be used to research the large-scale LPIs.
中图分类号: (Microinstabilities (ion-acoustic, two-stream, loss-cone, beam-plasma, drift, ion- or electron-cyclotron, etc.))