Electron density and plasma dynamics of a spherical theta pinch

2012 ◽  
Vol 19 (3) ◽  
pp. 033505 ◽  
Author(s):  
C. Teske ◽  
Y. Liu ◽  
S. Blaes ◽  
J. Jacoby
Keyword(s):  
Electron Density ◽  
Plasma Dynamics ◽  
Theta Pinch

scholarly journals Die zeitliche Änderung der radialen Elektronendichteverteilung beim Theta-Pinch

1963 ◽  
Vol 18 (8-9) ◽  
pp. 895-900
Author(s):  
Franz Peter Küpper
Keyword(s):  
Density Distribution ◽  
Electron Density ◽  
Electron Density Distribution ◽  
Electron Distribution ◽  
Radial Symmetry ◽  
Zero Order ◽  
Time Interval ◽  
Interferometric Method ◽  
Density Distributions ◽  
Theta Pinch

In a θ-pinch the radial symmetry of the electron density distribution as a function of time has been measured by a MACH—ZEHNDER interferometer. In a time interval of 400 nsec during a discharge an image converter made three pictures (exposure times of 10 nsec each) . Up to 100 nsec after the first compression, the experimental results show different density distributions for the cases of trapped parallel and antiparallel magnetic fields. Complete radial symmetry of the electron density distribution was not found.Another interferometric method for measuring the radial symmetry of the electron distribution by observing “zero order” fringes is described.

Measurement of Electron Density Evolution by the Optical Fiber Interferometer on Theta Pinch Plasmas*

2021 ◽  
Author(s):  
Tao Lan ◽  
Sen Zhang ◽  
Weixing Ding ◽  
Ge Zhuang ◽  
Zhengwei Wu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Electron Density ◽  
Density Evolution ◽  
Theta Pinch

GAS LASER MEASUREMENTS OF THE ELECTRON DENSITY OF A PLASMA PRODUCED BY A VERY FAST THETA‐PINCH PREHEATER

1965 ◽  
Vol 7 (2) ◽  
pp. 29-30 ◽  
Author(s):  
A. C. C. Warnock ◽  
W. M. Deuchars ◽  
J. Irving ◽  
D. E. Kidd
Keyword(s):  
Electron Density ◽  
Gas Laser ◽  
Laser Measurements ◽  
Theta Pinch

Déplacements des raies d'émission de l'ion ArII dans un plasma dense

1982 ◽  
Vol 60 (6) ◽  
pp. 820-824 ◽  
Author(s):  
P. A. Simard
Keyword(s):  
Qualitative Analysis ◽  
Spectroscopic Study ◽  
Electron Density ◽  
Argon Plasma ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Theta Pinch ◽  
First Time ◽  
Very High ◽  
Plasma Effect

A spectroscopic study of the emission from an argon plasma produced by a small theta-pinch is described. The electron density in the plasma is very high and the temperature relatively cool. Values obtained for these quantities are [Formula: see text] and [Formula: see text]. Wavelengths of many ArII lines have been measured between 2700 and 5000 Å. Many of these lines exhibit small shifts to the blue or to the red but others show large red shifts. Particularly significant are the multiplets 4p4P−4d4P, 4p4P−5s4P and 4p4S−4d4P where the measured shifts are about 6.0 ± 0.8 cm−1. These shifts have been interpreted as plasma polarization shifts. A plasma effect on the spin–orbit coupling in ArII has also been observed for the first time. A qualitative analysis of these phenomena is given.

scholarly journals Electron density and plasma dynamics of a colliding plasma experiment

AIP Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 075313 ◽  
Author(s):  
J. Wiechula ◽  
A. Schönlein ◽  
M. Iberler ◽  
C. Hock ◽  
T. Manegold ◽  
...  
Keyword(s):  
Electron Density ◽  
Plasma Dynamics ◽  
Plasma Experiment

Rapid Electron‐Density Oscillations on the Axis of a Theta Pinch

1966 ◽  
Vol 37 (2) ◽  
pp. 756-760 ◽  
Author(s):  
J. B. Gerardo ◽  
E. P. Bialecke ◽  
R. L. Hirsch
Keyword(s):  
Electron Density ◽  
Theta Pinch

OPTICAL EMISSION SPECTROSCOPY OF CARBON ARC DISCHARGE PLASMA

2015 ◽  
Vol 74 (8) ◽  
Author(s):  
Kashif Chaudhary ◽  
Usman Tariq ◽  
Sufi Roslan ◽  
Ong Shude ◽  
M. S. Aziz
Keyword(s):  
Electron Temperature ◽  
Electron Density ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Discharge Plasma ◽  
Arc Discharge ◽  
Ambient Pressure ◽  
Optical Emission ◽  
Plasma Dynamics ◽  
Arc Current

The arc discharge plasma is one of the efficient technique to fabricate nano-structures such as nanotubes, nanoparticles and thin films, which have variety of technological applications. In this study, plasma dynamics such as the electron density and temperature for arc discharge carbon plasma in methane ambient environment is presented to investigate the impact and contribution of physical parameter as arc current and ambient pressure on the plasma dynamics. The electron temperature and density is estimated applying in situ optical emission spectroscopy. The optical spectra are recorded for applied arc current 50A, 60A, 70A, 80A and 90A for ambient pressures 100torr, 300torr and 500torr. A rise in electron temperature and electron density is detected with increase in applied arc current and ambient pressure. The obtained results reveal that in arc discharge process, the arc current and ambient pressure have significant contribution towards the kinetics of the plasma species.

TIME‐DEPENDENT ELECTRON DENSITY MEASUREMENTS IN A FAST THETA‐PINCH DISCHARGE

1965 ◽  
Vol 7 (2) ◽  
pp. 30-32 ◽  
Author(s):  
W. M. Deuchars ◽  
D. E. Kidd ◽  
J. Irving ◽  
A. C. C. Warnock
Keyword(s):  
Electron Density ◽  
Time Dependent ◽  
Density Measurements ◽  
Theta Pinch
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