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Uppsala University
1 week ago
PhD student in experimental nuclear physics with a focus on nuclear fission and gamma-ray emission Uppsala University in Sweden
Degree Level
PhD
Field of study
Experimental Physics
Funding
Available
Deadline
Nov 27, 2026
Country
Sweden
University
Uppsala University
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About this position
Experimental nuclear physics PhD project at Uppsala University focused on nuclear fission and gamma-ray emission. The doctoral researcher will join the Division of Applied Nuclear Physics in the Department of Physics and Astronomy, based in the Ångström laboratory, and work within an internationally active group studying nuclear-reaction dynamics and fission through a combination of experiments and modelling.
The project is embedded in a Nordic collaboration between Uppsala University and the University of Oslo, within the Norwegian Nuclear Research Centre. It combines expertise in nuclear fission, nuclear structure, gamma-ray spectroscopy, detector development, and nuclear modelling, with a substantial part of the experimental work taking place at the Oslo Cyclotron Laboratory.
The research will investigate how excitation energy and angular momentum are shared between fission fragments and how that energy is released through gamma-ray emission. The student will measure prompt fission gamma-ray spectra, multiplicities, total energies, and related observables, and will work on extracting fission-product yields and isomeric yield ratios. The measurements use the uranium-235(d,pf) surrogate reaction and are designed to connect observed gamma emission with the excitation energy of the fissioning nucleus.
A major part of the work will involve the OSCAR gamma-ray detector array, charged-particle detectors, and a newly developed fission chamber. The student will contribute to detector characterisation, calibration, commissioning, optimisation, and data analysis, including coincidence techniques, detector-response corrections, background subtraction, and uncertainty analysis.
The project also includes computational fission modelling in collaboration with the nuclear data section at the International Atomic Energy Agency. Using TALYS and fission models such as FREYA and GEF, the PhD student will compare calculations with experimental results to assess how well current models describe energy sharing, angular momentum, and fragment de-excitation, and to help identify model limitations.
The position includes extended research visits to Oslo and may also involve detector tests and experiments at other international facilities. The student will present results in peer-reviewed publications, conferences, and collaboration meetings.
Funding details
Available
What's required
Applicants must meet doctoral eligibility through a relevant Master’s degree, or at least 240 higher education credits including at least 60 credits at Master’s level and an independent project of at least 15 credits, or equivalent knowledge from other studies or professional experience. The position requires interest in physics, experimental work, data analysis and physical modelling; the ability to work independently and systematically with attention to data quality; good collaboration skills; good oral and written English; and willingness and ability to undertake research visits abroad, especially to Oslo, and participate in experimental campaigns and scientific conferences. Desired qualifications include knowledge of nuclear physics and radiation detection, programming experience such as Python or C++, gamma-ray spectroscopy, coincidence measurements or nuclear-fission experiments, detector electronics or data-acquisition systems, experimental data analysis with ROOT or similar tools, Monte Carlo simulations such as Geant4, fission calculations with TALYS/FREYA/GEF or related codes, statistical analysis and uncertainty propagation, and scientific computing with large datasets.
How to apply
Apply through the Varbi application portal using the job link. Attach your transcript, a copy of or link to your degree project, and any other supporting documents you want to rely on. Answer the application questions provided in place of a cover letter and submit by 27 November 2026.
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