Rate My Professor Stefanos Paschalis

Stefanos Paschalis is a Senior Lecturer in the School of Physics, Engineering and Technology at the University of York, within the Physics faculty. He holds a Ph.D. from the University of Liverpool and has built a distinguished career in experimental nuclear physics. Following his doctoral studies, Paschalis served as a Postdoctoral Research Fellow at the Institute of Nuclear Physics, TU Darmstadt, Germany, and at Lawrence Berkeley National Laboratory, USA. He joined the University of York as Lecturer in Nuclear Technology and advanced to his current Senior Lecturer position. In addition to his research, he fulfills departmental roles including Year 1 Tutor and Graduate Admissions Tutor, and he is currently accepting PhD students. Paschalis is a member of the Institute of Physics since 2017 and chaired the 3rd International Workshop on Quasi-Free Scattering with Radioactive-Ion Beams (QFS-RB 17) held in 2017.

Paschalis's research centers on ionising radiation detection technology, where he leads detector developments for applications in fundamental research and societal needs. His work explores the structure of exotic nuclei through quasifree scattering reactions and spectroscopy, providing insights into the strong nuclear force, nucleon clustering, and the evolution of nuclear structure toward heavier systems. He has contributed significantly to major funding initiatives, serving as co-investigator on the Science and Technology Facilities Council (STFC) Nuclear Physics Consolidated Grant from 2017 to 2022 and as principal investigator on an Engineering and Physical Sciences Research Council (EPSRC) project evaluating digital SPAD imaging arrays for scintillator-based radiation detectors in 2017. Currently, he leads the ongoing £3.3 million STFC project for the R3B-TRT target-recoil-tracking array, reinforcing UK leadership within the R3B Collaboration. His scholarly output includes 146 research publications, among them key works such as 'Structure of 13Be studied in proton knockout from 14B' (Physical Review C, 2018), 'Intruder configurations of excited states in the neutron-rich isotopes 33P and 34P' (Physical Review C, 2018), and 'Strong neutron pairing in core+4n nuclei' (Physical Review Letters, 2018). Notably, he contributed to the first unambiguous experimental observation of resonance-like correlations in the tetraneutron system, published in Nature in 2022, advancing understanding of multi-neutron systems relevant to nuclear theory and astrophysics like neutron stars. Through extensive international collaborations, Paschalis's efforts have substantial impact in nuclear instrumentation and exotic nuclei research.