Elsevier

Nuclear Physics A

Volume 456, Issue 1, 4 August 1986, Pages 159-172
Nuclear Physics A

High energy γ-ray emission in heavy-ion collisions

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Abstract

We calculate double-differential cross sections for energetic photon production in intermediate energy nucleus-nucleus collisions. The production mechanism is assumed to be either that of collective bremsstrahlung or that of electromagnetic transitions between time-dependent single-particle states as emerging from a self-consistent treatment of the heavy-ion dynamics in the one-body limit (TDHF). Effects from residual nucleon-nucleon collisions on the collective current are further taken into account via a relaxation ansatz for the single-particle occupation numbers. The total yields for energetic photon production above 50 MeV in the simple limit considered indicate that up to 10% of the experimental cross sections can be attributed to collective bremsstrahlung and electromagnetic transitions.

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Work supported by BMFT and GSI Darmstadt.

1

Present address: Cyclotron Laboratory, Michigan State University.

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