Characteristics of the Plasma Injected Into DECA II; CARACTERISTIQUES DU PLASMA INJECTE DANS D.E.C.A. II

Technical Report · Tue Jan 01 04:00:00 EST 1963

OSTI ID:4693387

Lecoustey, P; Luc, H; Tachon, J; Veron, D

Deuterium plasma is injected from an electrodeless plasma gun along the lines of force of a static magnetic field. This field is constant over a length of 1 m; it increases thereafter in a 10 to 1 ratio over a 4 m length up to the chamber where the measurements are carried out. Density measurements are performed using Faraday cups and an 8.6 mm microwave interferometer. For instance in a 1600 gauss magnetic field a 0.5 x 10/sup 13/ deuteron/cm/sup 3/ density arises for a plasma with velocity 3 x 10/sup 7/ cm/s. The transverse energy is first determined from the diamagnetic signal amplitude of magnetic loops. The main results are obtained from the study of plasma transmitted through a magnetic barrier by means of measurements made with a Faraday cup, magnetic loops and thermocouples. The results given by these different methods are in good agreement and allow definition for the whole of the plasma flow a mean ( theta ) value for the ion pitch angle. In a 1600 gauss field, ( theta ) equal 32 degrees; i.e., mean transverse energy of 360 ev for a plasma with a 930 ev longitudinal energy (a velocity equal to 3 x 10/sup 7/ cm/s). The high value of the transverse energy might be attributed to a pre-compression in the field gradient. Preliminary measurements seem to indicate the possibility of trapping the plasma between two magnetic barriers. (auth)

• Research Organization: European Atomic Energy Community and France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Fontenay-aux-Roses
• NSA Number: NSA-17-026666
• OSTI ID: 4693387
• Report Number(s): CEA-2264
• Country of Publication: France
• Language: English

Related Subjects

COILS
CONFIGURATION
CURRENTS
DENSITY
DEUTERIUM
ELECTRIC CHARGES
ELECTRONIC EQUIPMENT
ENERGY
ENERGY RANGE
FARADAY CAGE
INJECTION
INSTRUMENTS
INTERFEROMETERS
IONS
MAGNETIC FIELDS
MAGNETIC MIRRORS
MEASURED VALUES
MICROWAVES
PHYSICS
PLASMA
SENSITIVITY
SIGNALS
SPECTROMETERS
THERMOCOUPLES
VARIATIONS
VELOCITY