Temperature ratio RT = TL/TH of fully accelerated complementary fragments (used for TXE partition) obtained independently of prompt emission model calculations

Abstract

Several refined prompt emission model codes, nowadays employed, use the partition of total excitation energy (TXE) according to the temperature ratio R_T = T_L/T_H of fully accelerated fragments. In such codes R_T is given as input, either as an unique value for all fragmentations or as a function of A_H; This temperature ratio R_T being obtained by fitting the experimental ν(A) data with the respective prompt emission model code. This paper proposes a method for obtaining “experimental R_T(A_H)” (also based on experimental ν(A)), but without resorting to prompt emission model calculations for the fit of ν(A) data. So that this is an independent method providing R_T(A_H) which can be employed by any prompt emission model code in which the TXE partition is done at the full acceleration according to R_T given as input. A procedure which facilitates the parameterization of R_T(A_H) is proposed, too. A prediction of the R_T(A_H) shape at very high excitation energies of the fissioning nucleus is also reported. The comparison of R_T(A_H) ratios obtained from any TXE partition based on modeling at scission with those provided by the present method can constitute a supplementary validation of the respective modeling at scission.