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Title: Effect of Deuterium Gas Puff On The Edge Plasma In NSTX

Abstract

This paper describes a detailed examination of the effects of a relatively small pulsed deuterium gas puff on the edge plasma and edge turbulence in NSTX. This gas puff caused little or no change in the line-averaged plasma density or total stored energy, or in the edge density and electron temperature up to the time of the peak of the gas puff. The radial profile of the Dα light emission and the edge turbulence within this gas puff did not vary significantly over its rise and fall, implying that these gas puffs did not significantly perturb the local edge plasma or edge turbulence. These measurements are compared with modeling by DEGAS 2, UEDGE, and with simplified estimates for the expected effects of this gas puff.

Authors:
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1129011
Report Number(s):
PPPL-4999
DOE Contract Number:  
DE-ACO2-09CH11466
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Diagnostics, Tokamaks, Turbulence

Citation Formats

Zweben, S. J. Effect of Deuterium Gas Puff On The Edge Plasma In NSTX. United States: N. p., 2014. Web. doi:10.2172/1129011.
Zweben, S. J. Effect of Deuterium Gas Puff On The Edge Plasma In NSTX. United States. https://doi.org/10.2172/1129011
Zweben, S. J. 2014. "Effect of Deuterium Gas Puff On The Edge Plasma In NSTX". United States. https://doi.org/10.2172/1129011. https://www.osti.gov/servlets/purl/1129011.
@article{osti_1129011,
title = {Effect of Deuterium Gas Puff On The Edge Plasma In NSTX},
author = {Zweben, S. J.},
abstractNote = {This paper describes a detailed examination of the effects of a relatively small pulsed deuterium gas puff on the edge plasma and edge turbulence in NSTX. This gas puff caused little or no change in the line-averaged plasma density or total stored energy, or in the edge density and electron temperature up to the time of the peak of the gas puff. The radial profile of the Dα light emission and the edge turbulence within this gas puff did not vary significantly over its rise and fall, implying that these gas puffs did not significantly perturb the local edge plasma or edge turbulence. These measurements are compared with modeling by DEGAS 2, UEDGE, and with simplified estimates for the expected effects of this gas puff.},
doi = {10.2172/1129011},
url = {https://www.osti.gov/biblio/1129011}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 20 00:00:00 EST 2014},
month = {Thu Feb 20 00:00:00 EST 2014}
}