Investigation of edge neutral flux on the ISX-B tokamak using a low energy charge exchange analyzer

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5071380

Thomas, D M

To study the emission of D/sup 0/ from the periphery of a tokamak plasma, a low energy neutral particle spectrometer optimized for (E < 500 eV) has been built and employed on the ISX-B tokamak. The diagnostic utilizes a cesium vapor cell to form negative ions from the incident D/sup 0/ neutrals, and a 4-channel electrostatic analyzer to energy analyze the negative ions. To minimize cesium contamination of the vacuum system a heat pipe design was used for the vapor cell. The device was absolutely calibrated using D/sup 0/ beams from a particle accelerator. Two different techniques for forming low energy neutral beams were employed: electron capture by positive ions in a gas cell, and photodetachment of negative ions by a YAG laser.

• Research Organization: Texas Univ., Austin (USA)
• OSTI ID: 5071380
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
ALKALI METALS
ANIONS
ATOMS
CESIUM
CHARGED PARTICLES
ELEMENTS
IONS
ISX TOKAMAK
LASERS
MEASURING INSTRUMENTS
METALS
NEODYMIUM LASERS
PLASMA DIAGNOSTICS
PLASMA SHEATH
SOLID STATE LASERS
SPECTROMETERS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS