ABLA07 - towards a complete description of the decay channels of a nuclear system from spontaneous fission to multifragmentation

TL;DR

ABLA07 is a comprehensive statistical de-excitation code that models various nuclear decay channels, including fission and multifragmentation, guided by recent experimental data and applicable across different systems and energies.

Contribution

The paper introduces ABLA07, a unified model with fixed parameters that describes multiple nuclear decay processes based on empirical data.

Findings

ABLA07 successfully reproduces experimental nuclide distributions.

The model captures signatures of asymmetric fission and multifragmentation.

It accounts for the influence of dynamics and microscopic structure on decay channels.

Abstract

The physics and the technical algorithms of the statistical de-excitation code ABLA07 are documented. The new developments of ABLA07 have been guided by the empirical knowledge obtained in a recent experimental campaign on the nuclide distributions measured at GSI, Darmstadt. Besides distinct signatures of very asymmetric binary splits, lighter systems show clear features of multifragmentation, while heavy systems reveal the influence of dynamics and microscopic structure on the fission process. ABLA07 includes elaborate but efficient descriptions of all these processes, with one set of the model parameters fixed for all systems and all energies.