Bremmstrahlung Radiation Losses in Polywell (Trademark) Systems
Abstract
The degree to which bremmstrahlung radiation constrains or limits system performance depends on the energy of the electrons which are the principal source of this radiation, through their collisions with in-situ ions. This is true in those cases in which the electron energy is such that the electron speed exceeds the ion speed, at which condition the ions can be regarded as stationary targets for the electrons. If the electron energy is so low that the electron speed is comparable to the ion speed, then the ion energy must also be taken into account in computation of bremmstrahlung. This latter condition can obtain only in the core of the Polywell device, and then only if the central virtual anode is nearly zero in height, and if the electron ion collision rates are sufficiently small that no significant collisional heating of electrons can take place during the electron lifetime in the machine.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 07, 1991
- Accession Number
- ADA257646
Entities
People
- Katherine E. King
- Robert W. Bussard