Pre-thesis intership on the analysis of decay spectroscopy data in the region of actinides with the detector SEASON

Full description

The question of the limit of stability of nuclei, both in terms of proton/neutron asymmetry and in terms of mass, is an important open question in modern nuclear physics. In the region of heavy nuclei, the neutron-deficient actinides present a great interest. Indeed, strong octupolar deformation, giving a pear shape to the nuclei, are predicted and have event been already observed in some isotopes. These deformations seem to play a key role for nuclear stability, for nuclear decay modes, and may also be related to physics beyond the standard model. The main goal of the thesis we are proposing is to pursue the systematic study of these deformations by making use of the brand-new SEASON detector, whose first experiment will take place at the University of Jyväskylä (Finland) in February 2026. The thesis will focus on the analysis of data from the experimental campaign that will occur in summer 2026. Several experiments are foreseen, making use of different beam-target combinations to produce actinides by fusion-evaporation reaction. These actinides will then be sent inside SEASON to perform their decay spectroscopy.
Depending on the plannings, this intership will focus on the preparation and the realisation of the first experiments at Jyväskylä during the Summer 2026.

Location

Saclay

Internship conditions

• Internship duration: 3 months
• Level of study: Bac+5
• Training: Master 2
• Continuation in PhD thesis: Yes
• Application deadline: 6 avril 2026

Useful methods and technics:
Decay spectroscopy (alpha, electron, gamma)
Double-sided stripped Silicon detectors

Computer languages and software:
C/C++, Python
GEANT4/NPTool
ROOT

Supervisor

Thisse Damien
Phone: +33 1 69 08 46 12
Email :

Head of the laboratory DPhN / LENA

Sulignano Barbara
Phone: