One- and two-dimensional laser induced fluorescence at oblique incidence

被引：18

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：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2009年 / 18卷 / 02期

关键词：

ION VELOCITY DISTRIBUTION; CONICS; DISTRIBUTIONS; TOMOGRAPHY; EVOLUTION; TRANSPORT; PLASMAS; SHEATH; AR;

D O I：

10.1088/0963-0252/18/2/025012

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The diagnostic technique of laser induced fluorescence (LIF), generalized to the case of oblique laser injection angle relative to the local magnetic field direction, is employed for studies of the ion velocity distribution function (IVDF) in the magnetic expansion region of a helicon plasma source. One-dimensional LIF measurements reveal key characteristics of the acceleration mechanism responsible for creation of an ion beam in the expansion regions: a bimodal IVDF comprising a slowly drifting (similar to 150 m s(-1)) ion population and a fast ion beam (similar to 10.7 km s(-1)). Two-dimensional LIF, LIF tomography, provides additional insight regarding the origins of the two ion populations: the nearly isotropic slow population is a locally created background population whereas the distorted velocity distribution of the fast population is consistent with an origin upstream of the measurement location.

引用

页数：10

共 60 条

[1] Direct measurements of neutral density depletion by two-photon absorption laser-induced fluorescence spectroscopy [J].

Aanesland, A. ;

Liard, L. ;

Leray, G. ;

Jolly, J. ;

Chabert, P. .

APPLIED PHYSICS LETTERS, 2007, 91 (12)

[2] Laser-induced resonance fluorescence as a diagnostic technique in non-thermal equilibrium plasmas [J].

Amorim, J ;

Baravian, G ;

Jolly, J .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2000, 33 (09) :R51-R65

[3] Laser-induced fluorescence observation of self-organized ion structures induced by electrostatic perturbations [J].

Bachet, G ;

Skiff, F ;

Dindelegan, M ;

Doveil, F ;

Stern, RA .

PHYSICAL REVIEW LETTERS, 1998, 80 (15) :3260-3263

[4] MOMENTUM AND ENERGY EXCHANGE COLLISION TERMS FOR INTERPENETRATING BI-MAXWELLIAN GASES [J].

BARAKAT, AR ;

SCHUNK, RW .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1981, 14 (03) :421-438

[5] Electric fields in a sheath near a metal-dielectric interface [J].

Barnat, EV ;

Hebner, GA .

APPLIED PHYSICS LETTERS, 2004, 85 (16) :3393-3395

[6] 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

[7] 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

[8] Temporal evolution of bimodal argon-ion velocity distribution in an expanding helicon plasma [J].

Biloiu, Ioana A. ;

Scime, Earl E. .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2008, 36 (04) :1376-1377

[9] 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)

[10] Two-dimensional argon-ion velocity distributions in the expansion region of a helicon plasma source [J].

Biloiu, Ioana A. ;

Scime, Earl E. ;

Biloiu, Costel ;

Cohen, Samuel A. .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2008, 36 (04) :1216-1217

← 1 2 3 4 5 6 →