Open AccessFusion Reaction Rate in an Inhomogeneous Plasma
Author(s) -
S. Son,
Nathaniel J. Fisch
Publication year - 2004
Language(s) - English
Resource type - Reports
DOI - 10.2172/835897
Subject(s) - fusion , plasma , shock (circulatory) , function (biology) , physics , distribution function , reaction rate , statistical physics , computational physics , chemistry , nuclear physics , thermodynamics , medicine , philosophy , linguistics , biochemistry , evolutionary biology , catalysis , biology
The local fusion rate, obtained from the assumption that the distribution is a local Maxwellian, is inaccurate if mean-free-paths of fusing particles are not sufficiently small compared with the inhomogeneity length of the plasma. We calculate the first order correction of P0 in terms of the small spatial gradient and obtain a non-local modification of P(sub)0 in a shock region when the gradient is not small. Use is made of the fact that the fusion reaction cross section has a relatively sharp peak as a function of energy