Spatial retarding field energy analyzer measurements downstream of a helicon double layer plasma

被引：48

作者：

Cox, W. ^{[1
]}

Charles, C. ^{[1
]}

Boswell, R. W. ^{[1
]}

Hawkins, R. ^{[2
]}

机构：

[1] Australian Natl Univ, Space Plasma Power & Prop Grp, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

[2] Australian Natl Univ, ANU Supercomp Facil, Vizlab, Canberra, ACT 0200, Australia

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 07期

关键词：

D O I：

10.1063/1.2965866

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spatial ion energy measurements using a retarding field energy analyzer are performed in the exhaust of a 0.30 mTorr, 250 W helicon double layer plasma to investigate the divergence of the argon ion beam formed by acceleration in the double layer. Various divergence angles are computed by considering the radial distribution of beam density; the average beam ion diverging by 9 degrees. The efficiency at which momentum is imparted parallel to the longitudinal axis of the thruster is calculated to be 98%. The results show that a few centimeters downstream of the source, the beam ions do not follow the magnetic field lines. (c) 2008 American Institute of Physics.

引用

页数：3

共 19 条

[1] The current-free electric double layer in a coronal magnetic funnel [J].