Job Information
- Organisation/Company: IAA - ULB
- Research Field: Physics » Computational physics
- Researcher Profile: First Stage Researcher (R1)
- Positions: PhD Positions
- Application Deadline: 1 Nov 2026 - 12:00 (Europe/Brussels)
- Country: Belgium
- Type of Contract: Temporary
- Job Status: Full-time
- Is the job funded through the EU Research Framework Programme? Not funded by a EU programme
Offer Description
The origin and abundance of elements in the Universe remain key open questions in astrophysics. While the production of lighter nuclei in stellar interiors is relatively well understood, the synthesis of heavier elements and the role of radioactive decay processes such as beta decay present significant challenges. Beta decay plays a crucial role in stellar nucleosynthesis, the evolution of stars, and the energy generation in explosive astrophysical events. Understanding beta decay rates for neutron-rich nuclei is essential for modeling the r-process and other nucleosynthesis pathways, yet experimental data for many exotic nuclei remain scarce.
Astrophysical questions such as nucleosynthesis pathways and the properties of exotic nuclei motivate improved modeling of nuclear structure and decay processes. The most stringent test of our theoretical understanding lies in constructing models that not only reproduce known nuclear properties but can also reliably predict the behavior of nuclei far from stability, including their beta decay properties under extreme conditions of neutron/proton imbalance.
This PhD project fits within the broader aims of the Brussels group to provide nuclear data for astrophysical applications. The IAA has a long-standing tradition of developing large-scale nuclear structure models; our most recent BSkG series successfully describes static properties of nuclei (masses, radii, level densities, etc.) across the nuclear chart. The goal of this project is to extend these models to the calculation of beta decay properties. The successful candidate will work on developing the theoretical frameworks to compute beta decay half-lives and strength functions for nuclei relevant to astrophysical processes. The candidate will assist in updating BRUSLIB (http://www.astro.ulb.ac.be/bruslib/) by incorporating beta decay data, enabling better dissemination of results to the astrophysics community.
The succesfull candidate will start a PhD at the Institut d’Astronomie et d’Astrophysique (IAA) of the Université Libre de Bruxelles. We offer a dynamic research environment with expertise in the role of nuclei in the cosmos, featuring regular group meetings, an open culture of scientific discussion, and opportunities for collaborations. Applications will be reviewed starting immediately, and the successful candidate is encouraged to start as soon as possible.
Interested candidates should send their CV and request two referees to send their recommendation letter directly to W. Ryssens at wouter.ryssens@ulb.be.
Where to apply
E-mail: wouter.ryssens@ulb.be
Requirements
- Research Field: Physics
- Education Level: Master Degree or equivalent
Skills/Qualifications
The candidate must hold a master degree in physics.
The candidate must have excellent programming skills and a marked interest in numerical simulations and algorithms; knowledge of programming languages such as Fortran, C/C++ and Python is desirable.
The candidate should have good organizational skills, a taste for interdisciplinary research, excellent scientific writing and presenting skills and be able to work independently.
Working in our international team requires capacity of team work as well as a sufficient level of spoken and written English.
- Languages: ENGLISH
- Level: Good
Work Location(s)
- Number of offers available: 1
- Company/Institute: ULB
- Country: Belgium
Contact
- City: Brussels
- Website: https://www.astro.ulb.ac.be/
- Street: Boulevard du Triomphe
- Postal Code: B-1050
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