Statistical theory

  • Wolfgang Nörenberg
  • Hans A. Weidenmüller
Chapter
Part of the Lecture Notes in Physics book series (LNP, volume 51)

Abstract

In chapter 4, we have explained why nuclear cross-sections, in the domain where the density of compound states is high, are very rapidly varying functions of energy. This led us to consider energy-averaged cross-sections, with the averaging interval I subject to the conditions (4.2.4), and to the decompositions (4.1.11) and (4.2.5) of the average cross-section into a shape-elastic or direct part, and into a compound-nucleus contribution. These two parts can be viewed as representing the fast and the slow contributions, respectively, to the average cross-section, as explained in the paragraph following eq. (4.1.14). This interpretation leads to the expectation that the shape-elastic or direct part can be described by simple models involving only a few degrees of freedom. The most important of these models were described in chapters 5 and 7. We now turn to the evaluation of the compound-nucleus contributions to the energy-averaged cross-sections.

Keywords

Angular Distribution Master Equation Transmission Coefficient Compound Nucleus Direct Reaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag Berlin Heidelberg 1976

Authors and Affiliations

  • Wolfgang Nörenberg
    • 1
  • Hans A. Weidenmüller
    • 1
  1. 1.Max-Planck-Institut für KernphysikHeidelbergGermany

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