EXPERIMENTS IN JOULE HEATING OF PLASMA IN A STRONG MAGNETIC FIELD

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Nuclear Fusion (Austria)

OSTI ID:4686727

Gorbunov, E P; Dolgov-Savelev, G G; Kartashev, K B; Mukhovatov, V S; Strelkov, V S; Shepelev, M N; Yavlinskii, N A

A pulsed electrodeless deuterium discharge with lifetime of 5--7 mu sec in a strong longitudinal magnetic field was studied. It is shown that in the first stage of the discharge anomalously rapid losses of charged particles from the plasma take place. The average containment time of the electrons was usually 600 mu sec. The electrical characteristics of the discharge are observed to oscillate. The amplitude of these oscillations increases noticeably when the electron-density curve passes through a maximum. The possible mechanisms for the appearance of such oscillations as well as the mechanisms for charged particle losses are discussed. The ion temperature determined by the Doppler broadening of the hydrogen spectral lines increases in the course of the first stage of the process and by the beginning of the second stage reaches 20 ev. The electron temperature measured by the ratio of the 0 IV to 0 V spectral line intensities has approximately the same value. During the second stage of the discharge, the concentration of charged particles in the central region of the column is either maintained approximately constant or increases slightly. The electron density on the periphery of the plasma column is smaller than 10/sup 12/ cm/sup -3/. At the same time, an increase of the electron temperature, determined from the plasma electrical conductivity, is observed. Special coils permitted alteration of the configuration of the longitudinal magnetic field in the region of the diaphragms. The influence of these perturbations on the characteristics of the discharge during the various stages of the process was investigated. (auth)

• Research Organization: Academy of Sciences, Moscow
• NSA Number: NSA-17-042095
• OSTI ID: 4686727
• Journal Information: Nuclear Fusion (Austria), Journal Name: Nuclear Fusion (Austria) Vol. Vol: Suppl. 2, Pt. 3; ISSN NUFUA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

BARRIERS
CHARGED PARTICLES
COILS
CONFIGURATION
CONFINEMENT
CONTAINMENT TIME
DENSITY
DEUTERIUM
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRIC DISCHARGES
ELECTRICITY
ELECTRONS
ENERGY RANGE
HEATING
HYDROGEN
IONS
JOULE EFFECT
LOSSES
MAGNETIC FIELDS
MEASURED VALUES
OSCILLATIONS
OXYGEN
PHYSICS
PLASMA
PULSES
SPECTRA
SPECTRAL SHIFT
TEMPERATURE