Multicharged Ion Generation in Plasma Created by Millimeter Waves and Confined in a Cusp Magnetic Trap

Journal Article · Sat Jan 15 04:00:00 EST 2005 · Fusion Science and Technology

OSTI ID:20849864

Golubev, S; Izotov, I; Razin, S; Skalyga, V; Vodopyanov, A; Zorin, V ^[1]

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1. Institute of Applied Physics, Russian Academy of Sciences (Russian Federation)

Modern way of ECR multicharged ion sources development is connected with increasing of microwave frequency up to tens of GHz. Millimeter wave gyrotrons are used now at a few laboratories. Traditional mirror magnetic traps with min B configuration for suppressing of MHD instabilities became too expensive because very strong magnetic field is needed. So prospection of axisymmetric plasma trap with MHD stabilization is a quite relevant subject of modern plasma physics. The simplest trap of such kind is CUSP one. The zero level of magnetic field in the center of the trap doesn't allow to achieve a good confinement in classical regime. In a gasdynamic regime of plasma confinement was studied. The same regime may be realized in the CUSP geometry trap if plasma density is high enough. A small CUSP trap was designed for plasma creation by 37,5 GHz gyrotron radiation under ECR conditions. Temporal evolutions of plasma parameter in experiments were quite smooth and stable. Experimental ion charge state distribution corresponds with calculated one for optimal plasma conditions.

• OSTI ID: 20849864
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 1T Vol. 47; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AXIAL SYMMETRY
CHARGE STATES
ELECTRON CYCLOTRON-RESONANCE
GHZ RANGE
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
MAGNETIC MIRRORS
MAGNETOHYDRODYNAMICS
MICROWAVE AMPLIFIERS
MICROWAVE RADIATION
MULTICHARGED IONS
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA INSTABILITY
STABILIZATION
TRAPS