The GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt operates one of the leading particle accelerators for science. Currently, the new Facility for Antiproton and Ion Research (FAIR), one of the world's largest research projects, is under construction through international cooperation. GSI and FAIR offer the opportunity to work in this international environment with a team of employees committed to world-class science.

Join the Frontier of Nuclear Physics:

The Nuclear Spectroscopy Department at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany, invites applications for a Researcher position in experimental nuclear physics within the HISPEC/DESPEC collaboration. This collaboration is a central component of the NUSTAR (NUclear STructure, Astrophysics, and Reactions) program, one of the four scientific pillars of the upcoming FAIR facility, which is currently entering its commissioning phase.

About the Role:

The successful candidate will benefit from the chance to lead and take part in experimental physics research of the HISPEC/DESPEC project at one of the foremost accelerator facilities worldwide, taking on strategic responsibilities in the setup, operation, and coordination of experiments. Their strong contribution to data analysis, student supervision, and the dissemination of scientific results is expected to advance our understanding of nuclear shape evolution and shell structure far from stability. This position offers the opportunity to strengthen the physics scope of the local group and enhance its visibility in an international context.

GSI Helmholtzzentrum für Schwerionenforschung is a leading center for heavy-ion research, hosting a unique large-scale accelerator facility. The upcoming FAIR facility will enable unprecedented experiments to explore the structure of matter and the evolution of the universe. The HISPEC/DESPEC collaboration focuses on γ-ray based nuclear spectroscopy of fast radioactive ion beams, aiming to investigate nuclear structure and astrophysical processes through the detection of decay radiation from exotic nuclei. DESPEC experiments are currently being conducted at the existing GSI facility as part of FAIR Phase-0, utilizing the FRagment Separator (FRS) and an advanced detector setup. From 2028 the HISPEC/DESPEC project will move to the FAIR site to explore new frontiers.

Key Responsibilities:

• Development of HISPEC/DESPEC detector systems
• Execution of HISPEC/DESPEC experiments at GSI/FAIR, and other related laboratories
• Supervision and coordination of the local research team
• Presentation of results and group activities at international conferences and workshops
• Publication of scientific findings in peer-reviewed journals
• Active participation in the ongoing scientific work and collaboration efforts of the research group

Your Profile:

• Ph.D. in experimental nuclear physics
• At least three years of postdoctoral experience in nuclear spectroscopy
• Strong motivation for experimental nuclear physics and nuclear spectroscopy
• Experience with radiation detectors and nuclear data acquisition systems
• Excellent communication skills and ability to work effectively in a team

We offer a unique opportunity to work in an exciting and highly-stimulating environment within the framework of world-leading scientific topics. The duration of the position is unlimited.

The salary and benefits are based on the Collective Agreement for the German Public Service (TVöD-Bund) effective at GSI.

GSI supports the professional development of women. Therefore, women are especially encouraged to apply for the position.

Handicapped persons will be preferentially considered when equally qualified.

Further Information about FAIR and GSI is available at www.gsi.de and www.fair-center.eu.

Applications should include:

• a cover letter outlining your research interests and experience
• a detailed CV
• names of at least two suggested referees.

Join us at GSI to contribute to cutting-edge research in nuclear physics and be part of an international team exploring the fundamental aspects of matter.

If you find this position interesting and challenging, please send your application documents under the posting ID 25.101-1270 by 3^rd of October 2025 at the latest via the online portal on our job site

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