Characterization of the plasma endlosses in the gas dynamics trap
- Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)
The value of longitudinal energy and particle losses is among the most important parameters of the open systems for plasma confinement. We studied the plasma parameters in the expander (the region behind the mirror) of the Gas Dynamic Trap (GDT) and measured the dependence of the particle and energy fluxes through the mirror as functions of the plasma parameters inside the trap. The Gas Dynamic Trap concept was first proposed in and then studied in a number of theoretical and experimental works. The GDT is an axisymmetric open trap with a large mirror ratio and a length greatly exceeding the ion mean free path of scattering into the loss cone. A part of the GDT-device including the transition region between the central and expander is schematically. In these experiments the plasma density inside the trap was 1 {plus_minus} 1.5 {sm_bullet} 10{sup 13} cm{sup -3}, the electron temperature was 16-25 eV (the ion temperature was believed to be same). Under these conditions the ion mean free path exceeded the length of the mirror. Since the plasma in the central cell was collisional, the electron and ion distribution functions were isotropic Maxwellian. At the same time the regime of the plasma outflow through mirrors was collisionless. Such regimes as being rather common for the GDT have been studied theoretically in detail.
- OSTI ID:
- 232877
- Report Number(s):
- CONF-950749-; TRN: 97:015786
- Resource Relation:
- Conference: 22. international conference on phenomena in ionized gases, Hoboken, NJ (United States), 31 Jul - 4 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of XXII International conference on phenomena in ionized gases. Contributed papers 3; Becker, K.H.; Carr, W.E.; Kunhardt, E.E. [eds.]; PB: 120 p.
- Country of Publication:
- United States
- Language:
- English
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