Temperature and Lifetime Measurements in the SSX Wind Tunnel

M. Kaur; K. D. Gelber; A. D. Light; M. R. Brown

doi:10.20944/preprints201808.0483.v1

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preprints.org > physical sciences > nuclear and high energy physics > doi: 10.20944/preprints201808.0483.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Temperature and Lifetime Measurements in the SSX Wind Tunnel

^* ,

Version 1 : Received: 28 August 2018 / Approved: 29 August 2018 / Online: 29 August 2018 (06:16:51 CEST)

A peer-reviewed article of this Preprint also exists.

Kaur, M.; Gelber, K.D.; Light, A.D.; Brown, M.R. Temperature and Lifetime Measurements in the SSX Wind Tunnel. plasma 2018, 1, 229-241. Kaur, M.; Gelber, K.D.; Light, A.D.; Brown, M.R. Temperature and Lifetime Measurements in the SSX Wind Tunnel. plasma 2018, 1, 229-241.

Abstract

We describe electron temperature measurements in the SSX MHD wind tunnel using two different methods. First, we estimate T_e along a chord by measuring the ratio of the C__III 97.7 nm to C_IV 155 nm line intensities using a vacuum ultraviolet monochrometer. Second, we record a biasing scan to a double Langmuir probe to obtain a local measurement of T_e. The aim of these studies is to increase the Taylor state lifetime, primarily by increasing the electron temperature. Also, a model is proposed to predict magnetic lifetime of relaxed states and is found of predict the lifetime satisfactorily. Furthermore, we find that proton cooling can be explained by equilibration with the electrons.

Keywords

spectroscopy; plasma diagnostics

Subject

Physical Sciences, Nuclear and High Energy Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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