气压对大面积等离子体片电子密度分布的影响

	气压对大面积等离子体片电子密度分布的影响
	夏俊明; 孙海龙; 霍文青; 徐跃民; 孙越强; 白伟华; 柳聪亮; 孟祥广
刊名	强激光与粒子束
	2015
卷号	27 期号:8 页码:27084005
关键词	线形空心阴极大面积等离子体片电子密度分布快帧电子密度半高宽
ISSN号	1001-4322
其他题名	Effects of pressure on the pulsed magnetic confinement linear hollow cathode discharge
中文摘要	利用脉冲磁约束线形空心阴极放电装置,在 15 mT磁场约束下,产生了持续时间为200 μs、峰值放电电流为3 A、面积为60 cm×60 cm的大面积等离子体片。采用快帧法和旋转空心阴极法,在90~210 Pa内,利用朗缪尔探针首次获得了不同气压的等离子体片的厚度向电子密度分布及其演化构成的二维分布图；研究了在同等峰值放电电流条件下,等离子体片达到最大厚度向峰值电子密度时,气压对所需放电时间、最大厚度向峰值电子密度及电子密度半高宽的影响。结果表明：在相同的峰值放电电流条件下,等离子体片达到最大厚度向峰值电子密度的时间随气压的降低而减小；气压越低,最大厚度向峰值电子密度越大,电子密度半高宽越小。
英文摘要	Large planar plasma sheets with size of 60 cm×60 cm, maximum current of 3 A and duration of 200 μs, were obtained in a pulsed linear hollow cathode discharge device under 15 mT magnetic field confinement. The electron density 2-D distribution in the thickness direction and its evolution of plasma sheets with pressures between 90 Pa to 210 Pa were obtained by Langmuir probe using the fast frame function of oscilloscope and the rotating hollow cathode method. The effects of pressure on the time needed to reach the maximum peak density in the thickness direction, the maximum peak density and the full width at half maximum (FWHM) peak density, were investigated. The results show that, as the pressure decreased, the time reaching the maximum peak density in the thickness direction and the FWHM peak density diminished, while the maximum peak density in the thickness direction increased. These results could be utilized to manipulate the parameters of large planar plasma sheets. ©, 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.
收录类别	EI ; CSCD
语种	中文
CSCD记录号	CSCD:5498536
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4710]
专题	国家空间科学中心_空间环境部
推荐引用方式 GB/T 7714	夏俊明,孙海龙,霍文青,等. 气压对大面积等离子体片电子密度分布的影响[J]. 强激光与粒子束,2015,27(8):27084005.
APA	夏俊明.,孙海龙.,霍文青.,徐跃民.,孙越强.,...&孟祥广.(2015).气压对大面积等离子体片电子密度分布的影响.强激光与粒子束,27(8),27084005.
MLA	夏俊明,et al."气压对大面积等离子体片电子密度分布的影响".强激光与粒子束 27.8(2015):27084005.