Published March 30, 2009 | Version v1
Journal article Metadata-only

Studies of a Parallel Force Balance Breaking Instability in a Stellarator

Creators

  • 1. Los Alamos National Laboratory, ISR-6, Los Alamos, NM 87545 (United States)
  • 2. Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York, 10027 (United States)
  • 3. Kyoto Institute of Technology, Department of Electronics, Matsugasaki, Kyoto 606-8585 (Japan)

Description

An instability has been observed in non-neutral plasmas confined on magnetic surfaces in the presence of a finite ion fraction [Phys. Rev. Letters 100, 065002 (2008)]. The dependence of the frequency and amplitude of the instability on neutral pressure, magnetic field strength, and ion species show that the mode consists of interacting perturbations of ions and electrons. In the Columbia Non-neutral Torus (CNT) the instability has a poloidal mode number of m = 1. This does not correspond to a rational surface, implying that the parallel force balance of the electron fluid is broken. Here the diagnostic methods used to study this instability are described in detail, and some key results are shown.

Additional details

Identifiers

DOI
10.1063/1.3122293;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
1114
Journal Issue
1
Journal Page Range
p. 63-68
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
Workshop on non-neutral plasmas 2008
Acronym
Non-neutral plasma physics VII
Dates
16-20 Jun 2008
Place
New York, NY (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41045229
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
DISTURBANCES; ELECTRONS; IONS; MAGNETIC FIELDS; MAGNETISM; MODE RATIONAL SURFACES; PLASMA; PLASMA DIAGNOSTICS; PLASMA INSTABILITY; PLASMA PRESSURE; STELLARATORS
Descriptors DEC
CHARGED PARTICLES; CLOSED PLASMA DEVICES; ELEMENTARY PARTICLES; FERMIONS; INSTABILITY; LEPTONS; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC SURFACES; THERMONUCLEAR DEVICES

Optional Information

Notes
(c) 2009 American Institute of Physics