Impurity analysis of NSTX using a transmission grating-based imaging spectrometer

Deepak Kumar; Michael Finkenthal; Dan Stutman; Ronald E. Bell; Daniel J. Clayton; Ahmed Diallo; Ben P. Leblanc; Mario Podesta; Kevin Tritz

doi:10.1088/0741-3335/54/6/065010

Impurity analysis of NSTX using a transmission grating-based imaging spectrometer

Deepak Kumar^*, Michael Finkenthal, Dan Stutman, Ronald E. Bell, Daniel J. Clayton, Ahmed Diallo, Ben P. Leblanc, Mario Podesta, Kevin Tritz

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A transmission grating-based imaging spectrometer has recently been installed and operated on the National Spherical Torus Experiment (NSTX) at PPPL. This paper describes the spectral and spatial characteristics of impurity emission under different operating conditions of the experiment - neutral beam heated, ohmic heated and RF heated plasma. A typical spectrum from each scenario is analyzed to provide quantitative estimates of impurity fractions in the plasma.

Original language	English
Article number	065010
Journal	Plasma Physics and Controlled Fusion
Volume	54
Issue number	6
DOIs	https://doi.org/10.1088/0741-3335/54/6/065010
State	Published - Jun 2012
Externally published	Yes

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abstract = "A transmission grating-based imaging spectrometer has recently been installed and operated on the National Spherical Torus Experiment (NSTX) at PPPL. This paper describes the spectral and spatial characteristics of impurity emission under different operating conditions of the experiment - neutral beam heated, ohmic heated and RF heated plasma. A typical spectrum from each scenario is analyzed to provide quantitative estimates of impurity fractions in the plasma.",

author = "Deepak Kumar and Michael Finkenthal and Dan Stutman and Bell, {Ronald E.} and Clayton, {Daniel J.} and Ahmed Diallo and Leblanc, {Ben P.} and Mario Podesta and Kevin Tritz",

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AU - Kumar, Deepak

AU - Finkenthal, Michael

AU - Stutman, Dan

AU - Bell, Ronald E.

AU - Clayton, Daniel J.

AU - Diallo, Ahmed

AU - Leblanc, Ben P.

AU - Podesta, Mario

AU - Tritz, Kevin

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AB - A transmission grating-based imaging spectrometer has recently been installed and operated on the National Spherical Torus Experiment (NSTX) at PPPL. This paper describes the spectral and spatial characteristics of impurity emission under different operating conditions of the experiment - neutral beam heated, ohmic heated and RF heated plasma. A typical spectrum from each scenario is analyzed to provide quantitative estimates of impurity fractions in the plasma.

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Impurity analysis of NSTX using a transmission grating-based imaging spectrometer

Abstract

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