Improvement of bohr Hamiltonian Nuclear Physics - Montpellier, France - CEA - Commissariat à l'Energie Atomique

CEA - Commissariat à l'Energie Atomique

Entreprise vérifiée

Montpellier, France

il y a 3 semaines

Posté par:

Sophie Dupont

beBee Recruiter

Description

Domaine:

Neutronique et physique des réacteurs

Contrat:

Stage

Intitulé de l'offre:

Improvement of "Bohr Hamiltonian" nuclear physics models

Sujet de stage:

The Bohr Hamiltonian (BH) has been proved to be successful in describing the structure in the medium mass region where low-energy states can be described as elongation vibrations.

The BH gives direct access to the low-energy vibrational and rotational nuclear states as well as the electromagnetic transtion rates between them.

These quantities represent a critical input in combinatorial level densities models that can be used for codes such as FIFRELIN or CONRAD to produce nuclear data.

Durée du contrat (en mois):
6 mois

Description de l'offre:

The input required by the BH code in order to produce the level spectra can be either a purely phenomenological potential or one derived from microscopic calculations.

During the master-degree internship, the student will work to couple the BH code with the HFB3 code, which is used to perform calculations of nuclear ground state properties starting from an effective nucleon-nucleon interaction and based on mean-field formalism.

The student will then focus on how to estimate the energy correction arising from the coupling with quadrupole degrees of freedom to the nuclear ground state.

To this purpose, the student will work on the adjusting of the paramater of a simpler micro-macro model in order to evaluate the impact of these additional correlations on the parameters of the model.

To achieve the result, the student will investigate several advanced statistical tools as Neural Networks or Gaussian Process Emulators in order to reduce the computational cost of the project.

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Alessandro PASTORE

Connaissances et Savoir-faire essentiels : Physique des réacteurs, neutronique.

Moyens informatiques:
Système d'exploitation Unix/Linux

Langages informatiques :
Connaissance en C++ et en Python

Localisation du poste:

Site:

Cadarache

Localisation du poste:

France, Provence-Côte d'Azur

Ville:

Saint Paul Lez Durance

Langues:

Anglais (Intermédiaire)

Diplôme préparé:

Bac+- Diplôme École d'ingénieurs

Possibilité de poursuite en thèse:

Non

Demandeur:

Disponibilité du poste:

02/01/2023