Multi-step particle emission probabilities in superheavy nuclei at moderate excitation energies

TL;DR

This paper evaluates multi-step particle emission probabilities in superheavy nuclei at moderate excitation energies using Monte Carlo simulations and compares microscopic and phenomenological models, introducing an analytical estimate for emitted particle energies.

Contribution

It introduces a combined microscopic and phenomenological approach to accurately calculate emission probabilities and kinetic energies in superheavy nuclei.

Findings

Microscopic level densities improve probability estimates.

Effective temperatures influence evaporation channel calculations.

Analytical formula estimates kinetic energies effectively.

Abstract

The probabilities of $xn$-, $pxn$-, and $\alpha xn$-evaporation channels in excited superheavy nuclei were evaluated using the Monte Carlo method. The calculations utilized microscopically determined nuclear level densities and were compared with results obtained from the phenomenological Jackson formula. Effective temperatures derived from the microscopic approach were incorporated into the Jackson formula for different evaporation channels at low and moderate excitation energies. Additionally, an analytical formula was introduced to estimate the average kinetic energy of emitted particles in multi-step processes.