Ion beam acceleration in a divergent magnetic field

被引：30

作者：

Biloiu, Ioana A. ^{[1
]}

Scime, Earl E. ^{[1
]}

Biloiu, Costel ^{[2
]}

机构：

[1] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA

[2] Varian Semicond Equipment Associates, Gloucester, MA 01930 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 19期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2927478

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two-dimensional argon ion velocity distribution functions (IVDFs) in the expansion region of a helicon plasma source have been measured by laser-induced-fluorescence tomography. Below a threshold value of the magnetic field in the expansion region, the IVDFs show a bimodal structure comprised of a supersonic ion population axially moving away from the source and an isotropic, slow, background, ion population. Increasing the magnetic field divergence leads to an increase in the axial speed of the supersonic component. A maximum axial speed of similar to 2.9c(s) was obtained for a source/expansion magnetic field ratio of 43. (C) 2008 American Institute of Physics.

引用

页数：3

共 19 条

[1] Evolution of the parallel and perpendicular ion velocity distribution functions in pulsed helicon plasma sources obtained by time resolved laser induced fluorescence [J].

Biloiu, C ;

Sun, X ;

Choueiri, E ;

Doss, F ;

Scime, E ;

Heard, J ;

Spektor, R ;

Ventura, D .

PLASMA SOURCES SCIENCE & TECHNOLOGY, 2005, 14 (04) :766-776

[2] Scanning internal probe for plasma particle, fluctuation, and LIF tomographic measurements [J].

Biloiu, C ;

Scime, E ;

Sun, X ;

McGeehan, B .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (10) :4296-4298

[3] High time resolution laser induced fluorescence in pulsed argon plasma [J].

Biloiu, Ioana A. ;

Sun, Xuan ;

Scime, Earl E. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2006, 77 (10)

[4] A review of recent laboratory double layer experiments [J].

Charles, C. .

PLASMA SOURCES SCIENCE & TECHNOLOGY, 2007, 16 (04) :R1-R25

[5] High source potential upstream of a current-free electric double layer [J].

Charles, C .

PHYSICS OF PLASMAS, 2005, 12 (04) :1-4

[6] Current-free double-layer formation in a high-density helicon discharge [J].

Charles, C ;

Boswell, R .

APPLIED PHYSICS LETTERS, 2003, 82 (09) :1356-1358

[7] The magnetic-field-induced transition from an expanding plasma to a double layer containing expanding plasma [J].

Charles, C. ;

Boswell, R. W. .

APPLIED PHYSICS LETTERS, 2007, 91 (20)

[8] Laser-induced-fluorescence observation of ion velocity distribution functions in a plasma sheath [J].

Claire, N. ;

Bachet, G. ;

Stroth, U. ;

Doveil, F. .

PHYSICS OF PLASMAS, 2006, 13 (06)

[9] Ion acceleration in plasmas emerging from a helicon-heated magnetic-mirror device [J].

Cohen, SA ;

Siefert, NS ;

Stange, S ;

Boivin, RF ;

Scime, EE ;

Levinton, FM .

PHYSICS OF PLASMAS, 2003, 10 (06) :2593-2598

[10] Ion beam formation in a low-pressure geometrically expanding argon plasma [J].

Corr, C. S. ;

Zanger, J. ;

Boswell, R. W. ;

Charles, C. .

APPLIED PHYSICS LETTERS, 2007, 91 (24)

← 1 2 →