The Nuclear Shell Model has been one of physics' most successful theories. It explains why some nuclei are unusually stable, predicts the existence of nuclear "magic numbers", and forms the foundation of our understanding of atomic nuclei. Yet recent experiments are revealing unexpected behaviour that challenges long-held assumptions. Are the traditional magic numbers really as robust as we thought? Or are some nuclei losing their "magic" altogether?

This project will use particle-transfer reactions to investigate these questions experimentally. By adding or removing a single proton or neutron from a nucleus, we can directly probe the quantum orbitals occupied by its constituent particles and test the predictions of modern nuclear models. These experiments provide one of the most powerful methods available for exploring the microscopic structure of atomic nuclei.

Research is centred on the Enge Magnetic Spectrometer at the ANU Heavy Ion Accelerator Facility. Acting as a giant microscope for nuclear reactions, the spectrometer separates reaction products according to their momentum, allowing precise measurements of nuclear structure. Students will have opportunities to participate in experiments, develop detector systems, analyse data, and compare measurements with state-of-the-art theoretical calculations.

Why is this exciting?

This project offers a rare opportunity to test one of physics' most influential theories using advanced accelerator infrastructure and cutting-edge instrumentation. Students will gain hands-on experience in experimental nuclear physics, radiation detection, data analysis, and scientific computing while contributing to research that addresses a fundamental question: How do protons and neutrons organise themselves inside the atomic nucleus?

This project is suitable for students interested in nuclear physics, experimental science, instrumentation, computing, or data analysis. No specialised background in nuclear physics is required. Curiosity, problem-solving skills, and a willingness to learn are far more important than prior experience. The project can be tailored to suit a student's interests, experience level, and desired learning outcomes. Scholarship support is available for outstanding Honours students commencing research in 2027. Interested students are encouraged to contact the supervisors to discuss available opportunities.