Abstract

Alpha-particle emission in coincidence with damped reaction fragments is studied for the 165Ho + 56Fe (Elab = 465 MeV) reaction. Statistical emission from the two fully accelerated strongly damped reaction fragments accounts for the dominant sources of the α particles. The α-particle multiplicity Mα depends strongly on the fragment excitation energy and atomic number, with an average multiplicity 〈Mα〉 = 0.2 for Fe-like fragments from damped reaction events with −Q > 100 MeV. Temperatures derived from neutron and α-particle spectra are in good agreement.

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