Physics & Astronomy
We studied single-neuron excitations of the exotic nucleus 71Se with the one-neutron knockout reaction from a 72Se beam at the National Superconducting Cyclotron Laboratory. We measured gamma rays de-exciting states in 71Se using the Gretina gamma-ray tracking array and the momentum of the 71Se reaction product with the S800 Magnetic Spectrograph. We utilize a supercomputer to run multiple simulations and fit them to our gamma-ray spectrum. Using gamma-ray yields and level schemes, we can determine the number of times each excited state was populated by neutron knockout. We deduced cross sections for populating single-neutron excitations of 71Se, and our results provide an experimental test for nuclear shell model theory.
Himmelreich, Alyssa, "Gamma-ray Spectroscopy of One-Neutron Knockout From 72Se" (2023). Physics and Astronomy Summer Fellows. 43.
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