Regulation of operating conditions in plasma devices by gas desorption

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)

OSTI ID:6011376

Ignatov, V A; Naumenkov, S P; Stakhanov, I P

Estimates carried out by Stakhanov and Fiks (Pis'ma Zh. Tekh. Fiz. 7, 1255 (1981) and Zh. Tekh. Fiz. 53, 836 (1983) (Sov. Tech. Phys. Lett. 7, 537 (1981); Sov. Phys. Tech. Phys. 28, 535 (1983)) indicate that the operating conditions in plasma devices (tokamaks, stellarators, etc.) can be controlled by changing the temperature of the first wall, in which hydrogen or its isotopes are dissolved, in order to desorb the gas from the walls to produce an absorbing atmosphere in a closed chamber. This process is examined from a rigorous mathematical standpoint. The principal difficulties are partly due to the nonlinearity of the boundary conditions and partly to the need to treat the changes in the gas pressure inside the chamber during absorption or desorption. The time dependence of the gas pressure cannot be specified a priori but must be found by solving the equations. Analytical expressions for the limiting behavior are derived and analyzed, and the results of numerical calculations are presented.

• Research Organization: M. V. Lomonosov Institute of Precision Chemical Engineering, Moscow
• OSTI ID: 6011376
• Journal Information: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States) Vol. 29:4; ISSN SPTPA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201* -- Fusion Power Plant Technology-- Blanket Engineering
ADSORPTION
ANALYTICAL SOLUTION
CLOSED PLASMA DEVICES
DESORPTION
ELEMENTS
FIRST WALL
FLUIDS
GASES
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
NONMETALS
OPERATION
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTOR WALLS