ENSAR2 workshop: GEANT4 in nuclear physics

Session

Nuclear reactions at low and intermediate energies

NR

24 Apr 2019, 09:30

Other Institutes

Conveners

Nuclear reactions at low and intermediate energies: Nuclear reaction models in GEANT4

• Daniel Cano Ott (Centro de Investigaciones Energéticas Medioambientales y Tecno)

Nuclear reactions at low and intermediate energies

• Daniel Cano Ott (Centro de Investigaciones Energéti cas Medioambientales y Tecno)

Nuclear reactions at low and intermediate energies: Nuclear reactions II

• Nasser Kalantar-Nayestanaki (KVI-CART, University of Groningen)

Description

This session is dedicated to GEANT4 developments for nuclear reactions at low and intermediate energies.

42. Transport of low energy neutrons and charged particles in Geant4

Dr Emilio Mendoza (CIEMAT)

24/04/2019, 09:30

Nuclear reactions at low and intermediate energies

Oral

Geant4 allows to use the information available in ENDF-6 format data libraries for the transport of low energy neutrons and charged particles (up to 20 MeV). This is done by the so called G4ParticleHP model (previously G4NeutronHP). We will show the performance of the model, showing its capabilities and limitations. We will also talk about how to use it and about which simulations can be done...

17. Geant4 pre-compound model and nuclear de-excitation module

Vladimir Ivantchenko (CERN)

24/04/2019, 10:05

Nuclear reactions at low and intermediate energies

Oral

High and intermediate energy hadronic models should have a sub-model for simulation of nuclear de-excitation processes. In Geant4 there is a general pre-compound model and a general de-excitation module, which are used by many hadronic models. These models were recently modified and improved. Different aspects of these models are discussed and new validation results are presented.

15. The interface of BLOB with GEANT4

Carlo Mancini Terracciano (Sapienza Universita e INFN, Roma I (IT))

24/04/2019, 10:40

Nuclear reactions at low and intermediate energies

Oral

Despite of its large use, the models implemented in Geant4 have shown severe limitations in reproducing the measured secondary yields in ions interaction below 100 MeV/n, in term of production rates, angular and energy distributions.
For this reason, we coupled BLOB (Boltzmann-Langevin One Body), a models dedicated to simulate such interactions, with Geant4 and its de-excitation phase.
BLOB...

35. Cross-sections of Light Nuclei in the Glauber-Gribov representation

Prof. Vladimir Grichine (Lebedev Institute of RAS)

24/04/2019, 11:40

Nuclear reactions at low and intermediate energies

Oral

The Glauber-Gribov approach (corrections for both elastic and inelastic nucleon screening) is considered for the description of light nucleus-nucleus cross-sections. It was found that electromagnetic nucleus radii are result in better description of measurements. The calculations are compared with experimental data for the reaction cross-sections

23. Fission Models in Geant4: Status and Plans

Dennis Herbert Wright

24/04/2019, 12:10

Nuclear reactions at low and intermediate energies

Oral

Fission in Geant4 is currently simulated as both a separate process and as a de-excitation model in other inelastic processes. Several different models exist, each with different interfaces and functionalities. This has led to confusion about which models are used and what they do, and to the possibility of users double counting fission by incorrect assignment in physics lists. The...

12. The Liège Intranuclear Cascade (INCL) model. Its evolutions and capabilities.

Jean-Christophe David

25/04/2019, 11:40

Nuclear reactions at low and intermediate energies

Oral

INCL (Liège Intranuclear Cascade) is an intranuclear cascade model, a first step for modeling spallation reactions. It is usually combined with the de-excitation code Abla to simulate the entire reaction.
We will quickly present how this model developed during the last three decades. We will also show how its present high reliability has been achieved, how it has been extended toward the low...

4. Development of a simulation toolkit for lifetime studies based on Doppler-shift methods

Thomas Braunroth (Physikalisch-Technische Bundesanstalt (PTB))

25/04/2019, 12:10

Nuclear structure

Oral

The Doppler-Shift Attenuation Method (DSAM) and the Recoil-Distance Method (RDM) are
powerful tools to measure nuclear level lifetimes in the (sub) pico-second range which are used to
determine model-independent transition strengths.
With respect to the common analysis of DSAM experiments, one can distinguish between
analytical approaches and tools using Monte-Carlo methods. The latter...

40. Calculation of the neutron production induced by radiogenic alpha-decay with Geant4

Daniel Cano Ott (Centro de Investigaciones Energéti cas Medioambientales y Tecno), Dr Emilio Mendoza (CIEMAT)

25/04/2019, 12:30

Nuclear reactions at low and intermediate energies

Oral

The calculation of the neutrons produced in (alpha,xn) reactions in a certain material require the calculation of the alpha-tracks, the cross sections of the neutron production reactions involved and the energy distributions of the secondary neutron energy distributions.

All these ingredients are present in Geant4, namely the slowing down of the alpha particles (EM physics), the neutron...