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Optical-Model Description of Low-Energy Excitations in Nuclear Matter

C. B. Duke*

  • Palmer Physical Laboratory, Princeton University, Princeton, New Jersey and General Electric Research Laboratory, Schenectady, New York

  • *Present address: General Electric Research Laboratory, Schenectady, New York.
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Phys. Rev. 136, B59 – Published 12 October, 1964

DOI: https://doi.org/10.1103/PhysRev.136.B59

Abstract

The decay of single-particle excitations in nuclear matter is calculated in the low-density-gas approximation (independent-pair approximation) using a separable nucleon-nucleon interaction. For low-energy excitations this decay is describable in terms of an optical model during a time interval which is longer than 5×10−23 sec but shorter than 5×10−21 sec. In contrast to earlier calculations, the applicability of the optical model is verified and the mean energy of an excitation is computed prior to the evaluation of the optical-model parameters. Previous calculations of these parameters are shown to lead either to a circumstance in which an optical-model description of the decay is inapplicable or to an excitation whose mean energy is far off the energy shell.

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Phys. Rev. 136, B59– Published 12 October, 1964
  • Received 28 May 1964

© 1964 American Physical Society

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