Mathis Wiedeking

Staff Scientist


Mathis Wiedeking is a Staff Scientist within the Nuclear Data group at Lawrence Berkeley National Laboratory (LBNL). His primary research interests revolve around the investigation of the quasi-continuum through the measurement of photon strength functions and nuclear level densities using gamma-ray spectroscopy techniques in conjunction with particle detectors.

Mathis actively engages in the compilation, assessment, evaluation and dissemination of quasi-continuum nuclear data, collaborating closely with the International Atomic Energy Agency (IAEA). This collaboration bridges the gap between quasi-continuum research and a broad spectrum of fields, ranging from nuclear structure and nuclear astrophysics to the practical applications in medical isotope production, non-proliferation efforts, as well as fission and fusion reactor technologies.

Mathis earned his Master of Physics degree from the University of Surrey (UK) and completed his Ph.D. in experimental nuclear physics at Florida State University (USA). Following two three-year post-doctoral fellowships at LBNL and Lawrence Livermore National Laboratories (LLNL), he assumed the role of Senior Scientist at iThemba LABS in South Africa. During his tenure at iThemba LABS, Mathis held the position of Head of the Separated Sector Cyclotron Laboratory and served as a Chief Scientific Investigator for a coordinated research project at the IAEA. He was awarded a Research Chair in Nuclear Physics and a Professorship at the University of the Witwatersrand (South Africa) before joining LBNL as a Staff Scientist in 2024.