Postdoc - Nuclear Fuel Performance and Fission Gas Modelling

Forschungszentrum Jülich GmbH P-VA Personalabrechnung; Jülich; Vor Ort; EUR 55.000 - 70.000; Vollzeit

Benefits dieser Stelle

Research Environment

30 days vacation

International Advisory Service

Career Center

Welcome Days

Zusammenfassung

The Postdoc - Nuclear Fuel Performance and Fission Gas Modelling at Forschungszentrum Juelich invites applications from researchers with a PhD to advance computational materials science for high burn-up spent nuclear fuel. You will apply SCIANTIX and link to BISON/TRANSURANUS, study diffusion and bubble evolution, and help predict fission gas release and long-term storage performance.

You will collaborate with Atlas project partners, mentor PhD students, present results at conferences, and

Qualifikationen

• Master's degree with PhD in Nuclear Engineering, Computational Materials Science, Physics, Chemistry, or related discipline.
• Experience in mesoscale or engineering-scale modeling of nuclear fuel materials and familiarity with physics-based rate theory or related codes.
• Strong programming and data analysis skills (Python, C++, Fortran) and ability to parse complex data sets.

Aufgaben

• Apply and develop SCIANTIX-based simulations to model high burn-up spent nuclear fuel during extended interim storage.
• Predict and analyze diffusion, bubble evolution, and fission gas release to inform fuel performance predictions.
• Bridge theory and experiment by integrating microstructural and experimental data into computational models.
• Assist in coupling mesoscale fission gas behaviour models with macroscopic codes (BISON/TRANSURANUS) for long-term storage assessment.
• Collaborate with Atlas project partners, participate in exchanges, and mentor PhD/masters students in modelling codes.
• Analyze, document, and present results at international conferences and publish in peer-reviewed journals.

Kenntnisse

Python

C++

Fortran

Research experience

Ausbildung

Master's degree and PhD in Nuclear Engineering or related field

Tools

SCIANTIX

BISON

TRANSURANUS

Jobbeschreibung

Postdoc - Nuclear Fuel Performance and Fission Gas Modelling

The prolonged storage of spent nuclear fuel, particularly high burn up, requires specific knowledge of chemical, structural, radiological and mechanical processes that occur within the fuel assemblies which may impact their stability during storage. In addition to this, reliably predicting the medium-longer term performance is essential for safe storage and associated licensing. As part of the Ministry for Environment, Climate Action, Nature Conservation and Nuclear Safety (BMUKN) project "Atlas", the Institute of Fusion Energy and Nuclear Waste Management (IFN) / Nuclear Waste Management (IFN-2)is offering a Postdoc position for a motivated individual with a PhD and background in computational materials science to investigate the chemical and mechanical effects arising from delayed fission gas release in high burn-up spent nuclear fuel by applying SCIANTIX modelling and coupling this against fundamental and engineering-scale nuclear codes such as BISON and TRANSURANUS. The position will run for 3 years and is contingent upon project approval.

Your Job

• Apply and develop state-of-the-art computational investigative methods, specifically utilizing the SCIANTIX code, to simulate the behavior of high burn-up spent nuclear fuel during extended interim storage
• Predictive Analysis: Model and evaluate physical-chemical phenomena—such as diffusion, resolution, and bubble evolution, to deliver enhanced predictions of fission gas release (FGR) and structural engineering performance in spent fuel
• Bridge the gap between theory and experiment by integrating microstructural and experimental data into computational models to validate predictive capabilities
• Assist in coupling mesoscale fission gas behaviour models with macroscopic fuel performance codes such as BISON and TRANSURANUS to assess the long-term integrity of storage systems
• Actively collaborate and exchange benchmarks with the "Atlas" project partners, including participating in collaborative research exchanges
• Support and mentor PhD and Masters level students in implementing modelling codes and analysis
• Analyze, document, and present data at international conferences and publish findings in high-impact, peer-reviewed scientific journals

Your Profile

• Master's degree with subsequent PhD degree in Nuclear Engineering, Computational Materials Science, Physics, Chemistry, or a closely related discipline
• Proven experience in mesoscale or engineering-scale modeling of nuclear fuel materials. Familiarity with physics-based rate theory, mechanistic modeling, or fuel performance codes such as SCIANTIX particularly but also TRANSURANUS or BISON is highly desirable
• Strong foundational knowledge in fission gas behaviour (including diffusion, bubble nucleation, resolution, and microstructural evolution) and the mechanics of high burn-up spent nuclear fuel under extended interim storage conditions
• Solid scientific programming and data analysis skills (e.g., Python, C++ or Fortran) for script development, code execution, and parsing complex data sets
• Ability to independently design, execute, and troubleshoot your research output while aligning results with the overarching goals of the Atlas project
• Assist in the co-supervision and mentoring of PhD candidates, master's students, or technical staff working within the research group whilst performing an active leadership role in the Atlas project
• Excellent English communication and scientific writing skills (at least B2 level according to the CEFR), with a demonstrated track record of publishing in peer-reviewed journals

Our Benefits for You

• Research Environment: Working within the state-of-the-art nuclear laboratories of Forschungszentrum Juelich, Institute of Fusion Energy and Nuclear Waste Management (IFN) / Nuclear Waste Management (IFN-2)
• Research infrastructure: Access to state-of-the-art computational infrastructure
• Mentoring & Expertise: Mentoring and training by global experts in nuclear fuel materials chemistry and condensed matter physics
• Knowledge & further training: Support for further career growth, with the flexibility to develop your own independent scientific ideas within the project's scope
• International networking: Confirmed funded opportunities to attend international conferences and training events
• Vacation: You will receive 30 days of vacation plus additional days off (e.g. between Christmas and New Year's)
• Health & well-being: Your health is important to us. You can look forward to a comprehensive occupational health management program with a wide range of offerings - e.g., a beach volleyball court, running groups, yoga classes, and much more. In addition, our company medical service and an experienced social counseling team are available to assist you on site
• Support for international employees: Our International Advisory Service makes it easier for international employees to get started
• Career Center: You will receive explicit support with regard to your career development opportunities
• Successful start: It is important to us that you quickly settle into the team and are given structured training for your tasks. We also support you from the very beginning and make your start easier with our Welcome Days and Welcome Guide
• Fair remuneration: Depending on your existing qualifications and the tasks assigned to you, you will be classified in pay grade EG 13 of the TVöD-Bund (Collective Agreement for the Public Service). All information on the TVöD-Bund collective agreement can be found on theBMI website. The monthly salaries in euros can be found on page 69 ff. of the PDF download
• Additional benefits: Benefit from attractive additional services such as a company pension scheme with employer contribution. In addition to the basic salary, there is an additional year-end bonus under the collective pay agreement amounting to 75% of a monthly salary, as well as capital-forming benefits
• Fixed-term: 3 Year position contingent upon project approval
• In addition to exciting tasks and a collegial working environment, we offer you much more: https://go.fzj.de/benefits
• We welcome applications from people with diverse backgrounds, e.g. in terms of age, gender, disability, sexual orientation / identity, and social, ethnic and religious origin. A diverse and inclusive working environment with equal opportunities in which everyone can realize their potential is important to us.
• The following links provide further information on diversity and equal opportunities: https://go.fzj.de/equality and on specific support options: https://go.fzj.de/womens-job-journey

Place of Employment

Jülich

Start Date

As soon as possible

Working Hours

39 Hours / Week

Salary

EG 13 TVöD-Bund

Application Deadline

The position will be published until it is successfully filled.