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National Superconducting
Cyclotron Laboratory

Artemis Spyrou
Artemis Spyrou
Professor
Experimental Nuclear Physics
PhD Physics, National Technical University of Athens, 2007
Joined NSCL in May 2007
Phone 517-908-7141
Office 2008
spyrou at nscl.msu.edu

Artemis Spyrou

Professional Homepage

My research focuses on the field of Experimental Nuclear Astrophysics. I study the structure of exotic nuclei and how they react with each other. These are important quantities for understanding astrophysical processes. Some of these important reactions are very hard to measure. In such cases, we find indirect ways to study and understand the reaction of interest.

The elements that we find today on earth, that are part of your own body, were all created inside stars. Starting with nuclear reactions of hydrogen and helium, stars build the lightest elements. Various reaction cycles produce heavier and heavier elements, up to the region of iron. Above iron most elements are created through two neutron processes, called slow (s) and rapid (r) processes. The production of new elements takes place through neutron-capture reactions together with β-decays. There is also a small group of proton-rich nuclei, made in a third process, called the “p process”. Recently we also discovered that there may be contributions from even more mechanisms. My group also focuses on one such mechanism, the intermediate, or i-process.

Today we know enough about stellar nucleosynthesis to understand that it is very complex. Many open questions still remain. My work as an experimentalist is to measure the nuclear reactions that take place in stars. For this purpose my group developed one of the most efficient gamma-ray detectors in the world, the SuN detector.

My group performs experiments in many different parts of the laboratory. We also have collaborators and run experiments at other laboratories around the world. We measure beta-decays and nuclear reactions using the SuN detector and other devices. For our research we collaborate with groups from the United States, Norway, Canada, the UK, and other parts of the world. We each bring different expertise and work together to answer the important question: “How are the elements formed in the Universe?”

Students in my group work on all aspects of nuclear astrophysics, based on their interests. They prepare and run experiments, perform simulations, analyze data, propose new experiments, run theoretical and astrophysical calculations, contribute in new experimental developments, and travel to other labs for experiments.

Collision-to-Supernova

The SuN detector is shown next to an artist’s rendition of astronomical events.

Selected Publications

Strong Neutron-γ Competition above the Neutron Threshold in the Decay of 70Co, A. Spyrou, S. N. Liddick, et al. Physical Review Letters 117 (2016) 142701

Novel technique for constraining r-process (n,γ) reaction rates. A. Spyrou, S.N. Liddick et. al., Physical Review Letters 113 (2014) 232502

Experimental Neutron Capture Rate Constraint far from stability. S.N. Liddick, A. Spyrou, et al, Physical Review Letters 116 (2016) 242502

Total Absorption Spectroscopy of the β-decay of 76Ga. A.C. Dombos, D.-L. Fang, A. Spyrou, et al. Physical Review C 93 (2016) 064317