Critical excitation energy in fusion-evaporation reactions

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1990 English Publisher:American Physical Society (APS)Journal:Physical Review C, volume 41, pages R5-R8 (issn: 0556-2813, eissn: 1089-490X,

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Authors: , Bohne; , Morgenstern; , Grabisch; , Nakagawa; , Proschitzki;

doi: 10.1103/physrevc.41.r5

pmid: 9966367

Critical excitation energy in fusion-evaporation reactions

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Abstract

The widths of the residue-mass distributions are used as a measure of the excitation energy of hot nuclei. They increase with the recoil velocity but saturate much below the calculated velocity {ital v}{sub CN} for complete fusion. Above these critical excitations energies (4.5--6.4 MeV/nucleon) derived from the recoil velocity, the normal evaporation of nucleons and small clusters disappears, if a hot and equilibrated compoundlike nucleus is formed at all.

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