In-plane particle-residue correlations in the Ar40 (1100 MeV) +24 Mg reaction

Le résumé fourni par la source

With the aim of studying the related phenomena of preequilibrium and statistical decay origin, light charged particles (p,d,t,\ensuremath{\alpha}) and evaporation residues have been measured in the $^{40}\mathrm{Ar}$${+}^{24}$Mg reaction performed at 27.5 MeV/nucleon. Proton-residue correlations were investigated and compared to simulations based on a model associating promptly emitted particles (PEP) with binary-scission statistical decay; a satisfactory agreement is obtained. The data evidence phase-space constraints and the competing presence of (i) preequilibrium emission, which dominate at backward angles and which can be described correctly in the context of PEP, and (ii) evaporative emission focused at forward angles. The data show also a substantial complex particle emission at both preequilibrium and evaporation stages demanding their inclusion in future theoretical treatment of preequilibrium.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.