A temporally and spatially resolved electron density diagnostic method for the edge plasma based on Stark broadening

A. Zafar; E. H. Martin; S. C. Shannon; R. C. Isler; J. B.O. Caughman

doi:10.1063/1.4955484

A temporally and spatially resolved electron density diagnostic method for the edge plasma based on Stark broadening

A. Zafar, E. H. Martin, S. C. Shannon, R. C. Isler, J. B.O. Caughman

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2 Scopus citations

Abstract

An electron density diagnostic (≥10¹⁰ cm^-3) capable of high temporal (ms) and spatial (mm) resolution is currently under development at Oak Ridge National Laboratory. The diagnostic is based on measuring the Stark broadened, Doppler-free spectral line profile of the n = 6-2 hydrogen Balmer series transition. The profile is then fit to a fully quantum mechanical model including the appropriate electric and magnetic field operators. The quasi-static approach used to calculate the Doppler-free spectral line profile is outlined here and the results from the model are presented for H-δ spectra for electron densities of 10¹⁰-10¹³ cm^-3. The profile shows complex behavior due to the interaction between the magnetic substates of the atom.

Original language	English
Article number	11E505
Journal	Review of Scientific Instruments
Volume	87
Issue number	11
DOIs	https://doi.org/10.1063/1.4955484
State	Published - Nov 1 2016

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title = "A temporally and spatially resolved electron density diagnostic method for the edge plasma based on Stark broadening",

abstract = "An electron density diagnostic (≥1010 cm-3) capable of high temporal (ms) and spatial (mm) resolution is currently under development at Oak Ridge National Laboratory. The diagnostic is based on measuring the Stark broadened, Doppler-free spectral line profile of the n = 6-2 hydrogen Balmer series transition. The profile is then fit to a fully quantum mechanical model including the appropriate electric and magnetic field operators. The quasi-static approach used to calculate the Doppler-free spectral line profile is outlined here and the results from the model are presented for H-δ spectra for electron densities of 1010-1013 cm-3. The profile shows complex behavior due to the interaction between the magnetic substates of the atom.",

author = "A. Zafar and Martin, {E. H.} and Shannon, {S. C.} and Isler, {R. C.} and Caughman, {J. B.O.}",

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T1 - A temporally and spatially resolved electron density diagnostic method for the edge plasma based on Stark broadening

AU - Zafar, A.

AU - Martin, E. H.

AU - Shannon, S. C.

AU - Isler, R. C.

AU - Caughman, J. B.O.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - An electron density diagnostic (≥1010 cm-3) capable of high temporal (ms) and spatial (mm) resolution is currently under development at Oak Ridge National Laboratory. The diagnostic is based on measuring the Stark broadened, Doppler-free spectral line profile of the n = 6-2 hydrogen Balmer series transition. The profile is then fit to a fully quantum mechanical model including the appropriate electric and magnetic field operators. The quasi-static approach used to calculate the Doppler-free spectral line profile is outlined here and the results from the model are presented for H-δ spectra for electron densities of 1010-1013 cm-3. The profile shows complex behavior due to the interaction between the magnetic substates of the atom.

AB - An electron density diagnostic (≥1010 cm-3) capable of high temporal (ms) and spatial (mm) resolution is currently under development at Oak Ridge National Laboratory. The diagnostic is based on measuring the Stark broadened, Doppler-free spectral line profile of the n = 6-2 hydrogen Balmer series transition. The profile is then fit to a fully quantum mechanical model including the appropriate electric and magnetic field operators. The quasi-static approach used to calculate the Doppler-free spectral line profile is outlined here and the results from the model are presented for H-δ spectra for electron densities of 1010-1013 cm-3. The profile shows complex behavior due to the interaction between the magnetic substates of the atom.

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VL - 87

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

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M1 - 11E505

ER -

A temporally and spatially resolved electron density diagnostic method for the edge plasma based on Stark broadening

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