9-13 July 2018
Sofia, Bulgaria
Europe/Sofia timezone

Preliminary results coupling SMF and BLOB with Geant4

10 Jul 2018, 16:00
Sofia, Bulgaria

Sofia, Bulgaria

National Culture Palace, Boulevard "Bulgaria", 1463 NDK, Sofia, Bulgaria
Poster Track 2 – Offline computing Posters


Carlo Mancini-Terracciano (INFN - Roma1)


Despite their frequent use, the hadronic models implemented in Geant4 have shown severe limitations in reproducing the measured yield of secondaries in ions interaction below 100 MeV/A, in term of production rates, angular and energy distributions [1,2,3]. We will present a benchmark of the Geant4 models with double-differential cross section and angular distributions of the secondary fragments produced in the 12C fragmentation at 62 MeV/A on thin carbon target; such a benchmark includes the recently implemented model INCL++ [4,5]. Moreover, we will present the preliminary results, obtained in simulating the same interaction, with SMF [6] and BLOB [7]. Both, SMF and BLOB are semiclassical one-body approaches to solve the Boltzmann-Langevin equation. They include an identical treatment of the mean-field propagation, on the basis of the same effective interaction, but they differ in the way fluctuations are included.
In particular, while SMF employs a Uehling-Uhlenbeck collision term and introduces fluctuations as projected on the density space, BLOB introduces fluctuations in full phase space through a modified collision term where nucleon-nucleon correlations are explicitly involved. Both of them, SMF and BLOB, have been developed to simulate the heavy ion interactions in the Fermi-energy regime. We will show their capabilities in describing 12C fragmentation coupled with the de-excitation phase of Geant4, as their implementation in Geant4 is foreseen.

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