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Title: Spectroscopic determination of the composition of a 50 kV hydrogen diagnostic neutral beam

Abstract

A grating spectrometer with an electron multiplying charge-coupled device camera is used to diagnose a 50 kV, 5 A, 20 ms hydrogen diagnostic neutral beam. The ion source density is determined from Stark broadened H{sub β} emission and the spectrum of Doppler-shifted H{sub α} emission is used to quantify the fraction of ions at full, half, and one-third beam energy under a variety of operating conditions including fueling gas pressure and arc discharge current. Beam current is optimized at low-density conditions in the ion source while the energy fractions are found to be steady over most operating conditions.

Authors:
; ;  [1];  [2]
  1. Department of Physics, University of Wisconsin–Madison, 1150 University Ave., Madison, Wisconsin 53706 (United States)
  2. Wheaton College, Wheaton, Illinois 60187 (United States)
Publication Date:
OSTI Identifier:
22596411
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM CURRENTS; BEAMS; CAMERAS; CHARGE-COUPLED DEVICES; DENSITY; DIAGNOSTIC TECHNIQUES; DOPPLER EFFECT; ELECTRONS; HYDROGEN; ION SOURCES; IONS; SPECTROMETERS

Citation Formats

Feng, X., Nornberg, M. D., E-mail: mdnornberg@wisc.edu, Den Hartog, D. J., Oliva, S. P., and Craig, D. Spectroscopic determination of the composition of a 50 kV hydrogen diagnostic neutral beam. United States: N. p., 2016. Web. doi:10.1063/1.4961269.
Feng, X., Nornberg, M. D., E-mail: mdnornberg@wisc.edu, Den Hartog, D. J., Oliva, S. P., & Craig, D. Spectroscopic determination of the composition of a 50 kV hydrogen diagnostic neutral beam. United States. https://doi.org/10.1063/1.4961269
Feng, X., Nornberg, M. D., E-mail: mdnornberg@wisc.edu, Den Hartog, D. J., Oliva, S. P., and Craig, D. 2016. "Spectroscopic determination of the composition of a 50 kV hydrogen diagnostic neutral beam". United States. https://doi.org/10.1063/1.4961269.
@article{osti_22596411,
title = {Spectroscopic determination of the composition of a 50 kV hydrogen diagnostic neutral beam},
author = {Feng, X. and Nornberg, M. D., E-mail: mdnornberg@wisc.edu and Den Hartog, D. J. and Oliva, S. P. and Craig, D.},
abstractNote = {A grating spectrometer with an electron multiplying charge-coupled device camera is used to diagnose a 50 kV, 5 A, 20 ms hydrogen diagnostic neutral beam. The ion source density is determined from Stark broadened H{sub β} emission and the spectrum of Doppler-shifted H{sub α} emission is used to quantify the fraction of ions at full, half, and one-third beam energy under a variety of operating conditions including fueling gas pressure and arc discharge current. Beam current is optimized at low-density conditions in the ion source while the energy fractions are found to be steady over most operating conditions.},
doi = {10.1063/1.4961269},
url = {https://www.osti.gov/biblio/22596411}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 87,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}