The effect of asymmetries on non‐neutral plasma confinement time

1994 ◽  
Vol 1 (5) ◽  
pp. 1123-1127 ◽  
Author(s):  
J. Notte ◽  
J. Fajans
Keyword(s):  
Confinement Time ◽  
Plasma Confinement ◽  
Neutral Plasma

Radial Plasma Confinement Time in the Central Cell of GAMMA 6 Determined from Measurements with a Charge Collector

1981 ◽  
Vol 20 (8) ◽  
pp. L601-L604 ◽  
Author(s):  
Kiyoshi Yatsu ◽  
Ikuo Wakaida ◽  
Yoichi Kiyohara ◽  
Akira Sakasai ◽  
Syoichi Miyoshi
Keyword(s):  
Central Cell ◽  
Confinement Time ◽  
Plasma Confinement ◽  
A Charge

Plasma confinement time in trimix-M galatea multipole magnetic trap

2010 ◽  
Vol 36 (5) ◽  
pp. 487-488 ◽  
Author(s):  
A. M. Bishaev ◽  
A. I. Bugrova ◽  
M. V. Kozintseva ◽  
A. S. Lipatov ◽  
A. S. Sigov ◽  
...  
Keyword(s):  
Magnetic Trap ◽  
Confinement Time ◽  
Plasma Confinement

Laser cooling of ions in a neutral plasma

Science ◽  
2019 ◽  
Vol 363 (6422) ◽  
pp. 61-64 ◽  
Author(s):  
Thomas K. Langin ◽  
Grant M. Gorman ◽  
Thomas C. Killian
Keyword(s):  
Laser Cooling ◽  
Optical Forces ◽  
Plasma Expansion ◽  
Laboratory Studies ◽  
Ion Temperature ◽  
Plasma Confinement ◽  
Strongly Coupled ◽  
Plasma State ◽  
Neutral Plasma ◽  
Current Kinetic

Laser cooling of a neutral plasma is a challenging task because of the high temperatures typically associated with the plasma state. By using an ultracold neutral plasma created by photoionization of an ultracold atomic gas, we avoid this obstacle and demonstrate laser cooling of ions in a neutral plasma. After 135 microseconds of cooling, we observed a reduction in ion temperature by up to a factor of four, with the temperature reaching as low as 50(4) millikelvin. This pushes laboratory studies of neutral plasmas deeper into the strongly coupled regime, beyond the limits of validity of current kinetic theories for calculating transport properties. The same optical forces also retard the plasma expansion, opening avenues for neutral-plasma confinement and manipulation.

Modifications of plasma edge electric field and confinement properties by limiter biasing on the KT-5C tokamak

1995 ◽  
Vol 54 (3) ◽  
pp. 393-400 ◽  
Author(s):  
Hui Gao ◽  
Kan Zhai ◽  
Yi-Zhi Wen ◽  
Shu-De Wan ◽  
Gui-Ding Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Electron Temperature ◽  
Particle Flux ◽  
Plasma Potential ◽  
Edge Plasma ◽  
Plasma Edge ◽  
Confinement Time ◽  
Plasma Confinement ◽  
Particle Confinement

Experiments using a biased multiblock limiter in the KT-5C tokamak show that positive biasing is more effective than negative biasing in modifying the edge electric field, suppressing fluctuations and improving plasma confinement. The biasing effect varies with the limiter area, the toroidal magnetic field and the biasing voltage. By positive biasing, the edge profiles of the plasma potential, the electron temperature and the density become steeper, resulting in a reduced edge particle flux, an increased global particle confinement time and lower fluctuation levels of the edge plasma.

JETTO simulations ofTe/Tieffects on plasma confinement

2005 ◽  
Vol 47 (3) ◽  
pp. 505-519 ◽  
Author(s):  
E Asp ◽  
J Weiland ◽  
X Garbet ◽  
P Mantica ◽  
V Parail ◽  
...  
Keyword(s):  
Plasma Confinement
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