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2. Calculations of the Electron Energy Distribution Function in a Uranium Plasma by Analytic and Monte Carlo Techniques

Author

Bathke, C. G

Subjects
Plasma Physics
Abstract

Electron energy distribution functions were calculated in a U235 plasma at 1 atmosphere for various plasma temperatures and neutron fluxes. The distributions are assumed to be a summation of a high energy tail and a Maxwellian distribution. The sources of energetic electrons considered are the fission-fragment induced ionization of uranium and the electron induced ionization of uranium. The calculation of the high energy tail is reduced to an electron slowing down calculation, from the most energetic source to the energy where the electron is assumed to be incorporated into the Maxwellian distribution. The pertinent collisional processes are electron-electron scattering and electron induced ionization and excitation of uranium. Two distinct methods were employed in the calculation of the distributions. One method is based upon the assumption of continuous slowing and yields a distribution inversely proportional to the stopping power. An iteration scheme is utilized to include the secondary electron avalanche. In the other method, a governing equation is derived without assuming continuous electron slowing. This equation is solved by a Monte Carlo technique.

Published
1976

21. Modular Stellarator Reactor Conceptual Design Study

Author

Hiller, R. L., primary, Bathke, C. G., additional, Krakowski, R. A., additional, Heck, F. H., additional, Green, L., additional, Karbowski, J. S., additional, Murphy, J. H., additional, Tupper, R. B., additional, Deluca, R. A., additional, Moazed, A., additional, and Terry, R. A., additional

Published
1983
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