Accession Number : ADA257651


Title :   Collisional Relaxation of Non-Maxwellian Plasma Distribution in a Polywell (Tradename)


Corporate Author : DIRECTED TECHNOLOGIES INC ARLINGTON VA


Personal Author(s) : Rosenberg, M ; Krall, Nicholas A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a257651.pdf


Report Date : Jun 1992


Pagination or Media Count : 46


Abstract : The Polywell is a magnetic version of a Spherically Convergent Ion Focus (SCIF) device which was proposed as a significant variation of earlier studies on electrostatic confinement. The idea of this device is to inject high energy electrons into a quasi-spherical magnetic field; the electrons create a potential well of sufficient depth to accelerate ions from low energy at the periphery to fusion energies within a focus at the center of the sphere. Injection of electrons keeps the system electrically nonneutral, so that the potential well which accelerates the ions is maintained at a constant value sufficient to confine the ions within the device, returning them again and again at high velocity to the central focus. Essential to the success of the scheme is that the ions maintain their nonthermal velocity distribution, with primarily radial flow, long enough to produce fusion in the dense focus at the center of the sphere.


Descriptors :   *MAGNETIC FIELDS , *ELECTRON ENERGY , *ION ACCELERATORS , PLASMAS(PHYSICS) , ELECTROSTATICS , NUCLEAR FUSION , PARTICLE COLLISIONS , ION ION INTERACTIONS , ION DENSITY , CONFINEMENT(NUCLEAR REACTORS)


Subject Categories : Particle Accelerators
      Nuclear Physics & Elementary Particle Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE