Cold-Electron Temperature Measurements in ELMO by Excitation Rate Ratios of Vacuum Ultraviolet Transitions

1974 ◽  
Vol 13 (9) ◽  
pp. 2003 ◽  
Author(s):  
J. A. Cobble
Keyword(s):  
Electron Temperature ◽  
Vacuum Ultraviolet ◽  
Temperature Measurements ◽  
Cold Electron ◽  
Excitation Rate ◽  
Rate Ratios

scholarly journals Temperature and Lifetime Measurements in the SSX Wind Tunnel

2018 ◽  
Author(s):  
M. Kaur ◽  
K. D. Gelber ◽  
A. D. Light ◽  
M. R. Brown
Keyword(s):  
Wind Tunnel ◽  
Electron Temperature ◽  
Langmuir Probe ◽  
Vacuum Ultraviolet ◽  
Temperature Measurements ◽  
Local Measurement ◽  
Lifetime Measurements ◽  
Line Intensities ◽  
Proton Cooling

We describe electron temperature measurements in the SSX MHD wind tunnel using two different methods. First, we estimate Te along a chord by measuring the ratio of the C_III 97.7 nm to CIV 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 Te. 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.

Electron temperature measurements with heavy ion beam probes

1985 ◽  
Vol 56 (5) ◽  
pp. 1044-1046 ◽  
Author(s):  
P. M. Schoch ◽  
J. R. Goyer ◽  
L. Solensten ◽  
J. D. Michael ◽  
E. Saravia ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Ion Beam ◽  
Heavy Ion ◽  
Temperature Measurements ◽  
Heavy Ion Beam

Soft X-ray PHA Diagnostic for the Electron Temperature Measurements on EAST

2009 ◽  
Vol 11 (4) ◽  
pp. 468-471 ◽  
Author(s):  
Xu Ping ◽  
Lin Shiyao ◽  
Hu Liqun ◽  
Duan Yanmin ◽  
Zhang Jizong
Keyword(s):  
Electron Temperature ◽  
Temperature Measurements ◽  
X Ray

scholarly journals NSEE Yielding Electron Temperature Measurements at the Arecibo Observatory

2019 ◽  
Vol 124 (5) ◽  
pp. 3699-3708 ◽  
Author(s):  
A. Mahmoudian ◽  
E. Nossa ◽  
B. Isham ◽  
P. A. Bernhardt ◽  
S. J. Briczinski ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Measurements ◽  
Arecibo Observatory

scholarly journals Temperature and Lifetime Measurements in the SSX Wind Tunnel

Plasma ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 229-241 ◽  
Author(s):  
Manjit Kaur ◽  
Kaitlin Gelber ◽  
Adam Light ◽  
Michael Brown
Keyword(s):  
Simple Model ◽  
Wind Tunnel ◽  
Electron Temperature ◽  
Langmuir Probe ◽  
Vacuum Ultraviolet ◽  
Lifetime Measurements ◽  
Line Intensities ◽  
Thermal Equilibration ◽  
Local Measurements ◽  
Doppler Spectroscopy

We describe ion and electron temperature measurements in the Swarthmore Spheromak Experiment (SSX) MHD wind tunnel with the goal of understanding limitations on the lifetime of our Taylor-state plasma. A simple model based on the equilibrium eigenvalue and Spitzer resistivity predicted the lifetime satisfactorily during the first phase of the plasma evolution. We measured an average T e along a chord by taking the ratio of the C I I I 97.7 nm to C I V 155 nm line intensities using a vacuum ultraviolet (VUV) monochromator. We also recorded local measurements of T e and n e using a double Langmuir probe in order to inform our interpretation of the VUV data. Our results indicated that the plasma decayed inductively during a large part of the evolution. Ion Doppler spectroscopy measurements suggested that ions cooled more slowly than would be expected from thermal equilibration with the electrons, which maintained a constant temperature throughout the lifetime of the plasma.

A NEW ECE SYSTEM AND ELECTRON TEMPERATURE MEASUREMENTS ON KSTAR TOKAMAK

2011 ◽  
Author(s):  
SEUNG HO JEONG ◽  
KYU-DONG LEE ◽  
YUICHIRO KOGI ◽  
ATSUSHI MASE ◽  
YOSHIO NAGAYAMA ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Measurements
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