Inertial electrostatic confinement and nuclear fusion in the interelectrode plasma of a nanosecond vacuum discharge. II: Particle-in-cell simulations

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X10130234· OSTI ID:21443319

Kurilenkov, Yu K; Tarakanov, V P ^[1]; Gus'kov, S Yu ^[2]

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1. Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
2. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

Results of particle-in-sell simulations of ion acceleration by using the KARAT code in a cylindrical geometry in the problem formulation corresponding to an actual experiment with a low-energy vacuum discharge with a hollow cathode are presented. The fundamental role of the formed virtual cathode is analyzed. The space-time dynamics of potential wells related to the formation of the virtual cathode is discussed. Quasi-steady potential wells (with a depth of {approx}80% of the applied voltage) cause acceleration of deuterium ions to energies about the electron beam energy ({approx}50 keV). In the well, a quasi-isotropic velocity distribution function of fast ions forms. The results obtained are compared with available data on inertial electrostatic confinement fusion (IECF). In particular, similar correlations between the structure of potential wells and the neutron yield, as well as the scaling of the fusion power density, which increases with decreasing virtual cathode radius and increasing potential well depth, are considered. The chosen electrode configuration and potential well parameters provide power densities of nuclear DD fusion in a nanosecond vacuum discharge noticeably higher than those achieved in other similar IECF systems.

• OSTI ID: 21443319
• Journal Information: Plasma Physics Reports, Vol. 36, Issue 13; Other Information: DOI: 10.1134/S1063780X10130234; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
DEUTERIUM IONS
DISTRIBUTION FUNCTIONS
HOLLOW CATHODES
INERTIAL CONFINEMENT
PLASMA
POWER DENSITY
SIMULATION
SPACE-TIME
THERMONUCLEAR REACTIONS
VELOCITY
CATHODES
CHARGED PARTICLES
CONFINEMENT
ELECTRODES
FUNCTIONS
IONS
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
PLASMA CONFINEMENT
SYNTHESIS