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Title: Plasma-parameter measurements using neutral-particle-beam attenuation

Abstract

Intense and energetic neutral-particle-beam injection used for fueling or heating magnetically confined, controlled-fusion experimental plasmas can also provide diagnostic measurements of the plasmas. The attenuation of an atomic beam (mainly from charge-exchange and ionization interactions) when passing through a plasma gives the plasma line density. Orthogonal arrays of highly collimated detectors of the secondary-electron-emission type have been used in magnetic-mirror experiments to measure neutral-beam attenuation along chords through the plasma volume at different radial and axial positions. The radial array is used to infer the radial plasma-density profile; the axial array, to infer the axial plasma-density profile and the ion angular distribution at the plasma midplane.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
6772966
Report Number(s):
UCID-19422
ON: DE82021120; TRN: 82-023263
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATOMIC BEAMS; PLASMA DIAGNOSTICS; TMX DEVICES; ATTENUATION; CHARGE EXCHANGE; DEUTERIUM; IONIZATION; PLASMA DENSITY; SECONDARY EMISSION DETECTORS; BEAMS; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; MAGNETIC MIRRORS; MEASURING INSTRUMENTS; NUCLEI; ODD-ODD NUCLEI; OPEN PLASMA DEVICES; RADIATION DETECTORS; STABLE ISOTOPES; THERMONUCLEAR DEVICES; 700102* - Fusion Energy- Plasma Research- Diagnostics

Citation Formats

Foote, J H, Molvik, A W, and Turner, W C. Plasma-parameter measurements using neutral-particle-beam attenuation. United States: N. p., 1982. Web. doi:10.2172/6772966.
Foote, J H, Molvik, A W, & Turner, W C. Plasma-parameter measurements using neutral-particle-beam attenuation. United States. https://doi.org/10.2172/6772966
Foote, J H, Molvik, A W, and Turner, W C. 1982. "Plasma-parameter measurements using neutral-particle-beam attenuation". United States. https://doi.org/10.2172/6772966. https://www.osti.gov/servlets/purl/6772966.
@article{osti_6772966,
title = {Plasma-parameter measurements using neutral-particle-beam attenuation},
author = {Foote, J H and Molvik, A W and Turner, W C},
abstractNote = {Intense and energetic neutral-particle-beam injection used for fueling or heating magnetically confined, controlled-fusion experimental plasmas can also provide diagnostic measurements of the plasmas. The attenuation of an atomic beam (mainly from charge-exchange and ionization interactions) when passing through a plasma gives the plasma line density. Orthogonal arrays of highly collimated detectors of the secondary-electron-emission type have been used in magnetic-mirror experiments to measure neutral-beam attenuation along chords through the plasma volume at different radial and axial positions. The radial array is used to infer the radial plasma-density profile; the axial array, to infer the axial plasma-density profile and the ion angular distribution at the plasma midplane.},
doi = {10.2172/6772966},
url = {https://www.osti.gov/biblio/6772966}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {7}
}