m = {+-}1 and m = {+-}2 mode helicon wave excitation

Journal Article · Sun Dec 01 04:00:00 EST 1996 · IEEE Transactions on Plasma Science

OSTI ID:419698

Kim, J H; Yun, S M; Chang, H Y ^[1]

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1. Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Physics

The characteristics of plasma produced by plane polarized m = {+-}1 and m = {+-}2 mode helicon waves were investigated for the first time. Plane polarized m = {+-}1 and m = {+-}2 mode helicon waves were mainly excited using a Nagoya type III antenna and a quadrupole antenna, respectively. Two-dimensional cross-field measurements of ArII optical emission induced by hot electrons were made to investigate the RF power deposition. The components of the wave magnetic field measured with a magnetic probe were compared with the field profiles computed for the m = {+-}1 and m = {+-}2 modes. Two and four high intensity plasma columns were observed for the m = {+-}1 and m = {+-}2 modes, respectively. These columns were located at the regions between the antenna legs. The radial profiles of the wave magnetic field were in good agreement with computations. The HELICON wave plasma source, first developed by Boswell, has been intensively investigated because of such numerous possible applications as plasma materials processing, plasma production in toroidal magnetic traps, in the particle acceleration system using plasma waves, and in the generation of active media for gas lasers.

• OSTI ID: 419698
• Journal Information: IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 6 Vol. 24; ISSN ITPSBD; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON IONS
ELECTRIC FIELDS
ENERGY ABSORPTION
HELICON WAVES
PLASMA DENSITY
PLASMA PRODUCTION
USES