DOE OSTI · 2588152
γIn-beam angular distribution and linear polarization measurements with GRETINA using a simple energy-ordering approach
Abstract
Angular distribution and linear polarization measurements are powerful tools for inferring the spins and parities of nuclear levels. In this work, the performance of the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) as a Compton polarimeter was characterized in a fusion-evaporation reaction experiment using a simple energy-ordering approach for the interaction points assigned in the signal decomposition process. A variety of multipolarities and characters for γ-ray transitions in the reaction products 25 Mg, 25 Na, and 22 Ne, formed from fusion-evaporation of an 18 O beam on a 9 Be target, were examined. The experimental angular distributions and linear polarization asymmetries were consistent with predictions using the theoretical formalism accounting for the Lorentz boost.
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Longfellow, Brenden [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:000000018743962X), Bender, Peter C. [Univ. of Massachusetts, Lowell, MA (United States)], Müller-Gatermann, Claus [Argonne National Laboratory (ANL), Argonne, IL (United States)], Seweryniak, Darek [Argonne National Laboratory (ANL), Argonne, IL (United States)], Beck, Tobias [Michigan State Univ., East Lansing, MI (United States)] (ORCID:0000000253959421), Campbell, Christopher M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)], Carpenter, M. P. [Argonne National Laboratory (ANL), Argonne, IL (United States)], Copp, Patrick A. [Argonne National Laboratory (ANL), Argonne, IL (United States)], Farris, Peter [Michigan State Univ., East Lansing, MI (United States)], Hoff, Daniel E. M. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000308385892), Hoffman, Calem R. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000171419827), Korichi, Amel [Argonne National Laboratory (ANL), Argonne, IL (United States); Université Paris-Saclay, Orsay (France)], Lauritsen, Torben [Argonne National Laboratory (ANL), Argonne, IL (United States)], Reviol, Walter [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000253727743), Rubino, Elizabeth [Michigan State Univ., East Lansing, MI (United States)], Siciliano, Marco [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000245980298), Zhu, Yiyi [Univ. of Massachusetts, Lowell, MA (United States)]. 2025-08-14. γIn-beam angular distribution and linear polarization measurements with GRETINA using a simple energy-ordering approach. https://doi.org/10.1016/j.nima.2025.170932
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