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Title: High-accuracy time- and space-resolved Stark shift measurements (invited)

Abstract

Stark-shift measurements using emission spectroscopy are a powerful tool for advancing understanding in many plasma physics experiments. We use simultaneous two-dimensional space- and time-resolved spectra to study the electric field evolution in the 20 TW Particle Beam Fusion Accelerator II ion diode acceleration gap. Fiber optic arrays transport light from the gap to remote streaked spectrographs operated in a multiplexed mode that enables recording time-resolved spectra from eight spatial locations on a single instrument. Design optimization and characterization measurements of the multiplexed spectrograph properties include the astigmatism, resolution, dispersion, and sensitivity. A semiautomated line-fitting procedure determines the Stark shift and the related uncertainties. Fields up to 10 MV/cm are measured with an accuracy {plus_minus}2{percent}{endash}4{percent}. Detailed tests of the procedure confirm that the uncertainty in the wavelength-shift error bars is less than {plus_minus}20{percent}. Development of an active spectroscopy probe technique that uses laser-induced fluorescence from an injected atomic beam to obtain three-dimensional space- and time-resolved measurements of the electric and magnetic fields is in progress. {copyright} {ital 1997 American Institute of Physics.}

Authors:
; ; ; ; ;  [1]
  1. Sandia National Laboratories, Albuquerque, New Mexico 87175-1196 (United States)
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
451939
Report Number(s):
CONF-960543-
Journal ID: RSINAK; ISSN 0034-6748; TRN: 97:006296
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 68; Journal Issue: 1; Conference: 11. annual high-temperature plasma diagnostics conference, Monterey, CA (United States), 12-16 May 1996; Other Information: PBD: Jan 1997
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; PARTICLE BEAM FUSION ACCELERATOR; PLASMA DIAGNOSTICS; STARK EFFECT; EMISSION SPECTROSCOPY; STREAK PHOTOGRAPHY; ELECTRIC FIELDS; SPATIAL RESOLUTION; TIME RESOLUTION; VISIBLE RADIATION; LITHIUM; DATA ACQUISITION; DATA PROCESSING; particle beam fusion accelerators; time resolved spectroscopy; two-dimensional spectroscopy; visible spectroscopy; curve fitting; plasma transport processes; high-speed optical techniques

Citation Formats

Bailey, J E, Adams, R, Carlson, A L, Ching, C H, Filuk, A B, and Lake, P. High-accuracy time- and space-resolved Stark shift measurements (invited). United States: N. p., 1997. Web. doi:10.1063/1.1147826.
Bailey, J E, Adams, R, Carlson, A L, Ching, C H, Filuk, A B, & Lake, P. High-accuracy time- and space-resolved Stark shift measurements (invited). United States. https://doi.org/10.1063/1.1147826
Bailey, J E, Adams, R, Carlson, A L, Ching, C H, Filuk, A B, and Lake, P. 1997. "High-accuracy time- and space-resolved Stark shift measurements (invited)". United States. https://doi.org/10.1063/1.1147826.
@article{osti_451939,
title = {High-accuracy time- and space-resolved Stark shift measurements (invited)},
author = {Bailey, J E and Adams, R and Carlson, A L and Ching, C H and Filuk, A B and Lake, P},
abstractNote = {Stark-shift measurements using emission spectroscopy are a powerful tool for advancing understanding in many plasma physics experiments. We use simultaneous two-dimensional space- and time-resolved spectra to study the electric field evolution in the 20 TW Particle Beam Fusion Accelerator II ion diode acceleration gap. Fiber optic arrays transport light from the gap to remote streaked spectrographs operated in a multiplexed mode that enables recording time-resolved spectra from eight spatial locations on a single instrument. Design optimization and characterization measurements of the multiplexed spectrograph properties include the astigmatism, resolution, dispersion, and sensitivity. A semiautomated line-fitting procedure determines the Stark shift and the related uncertainties. Fields up to 10 MV/cm are measured with an accuracy {plus_minus}2{percent}{endash}4{percent}. Detailed tests of the procedure confirm that the uncertainty in the wavelength-shift error bars is less than {plus_minus}20{percent}. Development of an active spectroscopy probe technique that uses laser-induced fluorescence from an injected atomic beam to obtain three-dimensional space- and time-resolved measurements of the electric and magnetic fields is in progress. {copyright} {ital 1997 American Institute of Physics.}},
doi = {10.1063/1.1147826},
url = {https://www.osti.gov/biblio/451939}, journal = {Review of Scientific Instruments},
number = 1,
volume = 68,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}