Bulletin of the American Physical Society
Fall 2022 Meeting of the APS Division of Nuclear Physics
Volume 67, Number 17
Thursday–Sunday, October 27–30, 2022; Time Zone: Central Daylight Time, USA; New Orleans, Louisiana
Session PE: Nuclear Astrophysics VIII
10:30 AM–12:06 PM,
Sunday, October 30, 2022
Hyatt Regency Hotel
Room: Celestin C
Chair: Adrian Valverde, Argonne National Laboratory/University of Manitoba
Abstract: PE.00005 : First experimentally-determined 93,94,95Sr(n,γ)94,95,96Sr cross section via the β-Oslo Method*
11:18 AM–11:30 AM
Presenter:
Adriana Sweet
(Lawrence Livermore National Laboratory)
Authors:
Adriana Sweet
(Lawrence Livermore National Laboratory)
Darren L Bleuel
(Lawrence Livermore National Laboratory)
Nicolas D Scielzo
(Lawrence Livermore National Laboratory)
Hannah C Berg
(Facility for Rare Isotope Beams)
Lee A Bernstein
(Lawrence Berkeley National Laboratory)
Aaron Chester
(Michigan State University)
Jason A Clark
(Argonne National Laboratory)
Dennis Mucher
(Department of Physics, University of Guelph)
Bethany L Goldblum
(Lawrence Berkeley National Laboratory)
Magne S Guttormsen
(Department of Physics, University of Oslo)
Caley Harris
(Facility for Rare Isotope Beams)
Stephanie M Lyons
(Pacific Northwest National Laboratory)
Erin C Good
(FRIB)
Adam Hartley
(Facility for Rare Isotope Beams)
Jordan Owens-Fryar
(Facility for Rare Isotope Beams)
Mejdi J Mogannam
(Facility for Rare Isotope Beams)
Timilehin H Ogunbeku
(Facility for Rare Isotope Beams)
Andrea L Richard
(Lawrence Livermore National Laboratory)
Eleanor Ronning
(Facility for Rare Isotope Beams)
Daniel Santiago-Gonzalez
(Argonne National Laboratory)
Guy Savard
(Argonne National Laboratory)
Mallory K Smith
(NSCL)
Artemis Spyrou
(Michigan State University)
Artemis Tsantiri
(Michigan State University)
Jasmina Vujic
(UC Berkeley)
Mathis Wiedeking
(iThemba LABS)
Ann-Cecilie Larsen
(Univ of Oslo)
Sean Liddick
(Facility for Rare Isotope Beams)
At Argonne National Laboratory, an experiment was performed to determine the γ-ray strength function (γSF) and nuclear level density (NLD) for 94,95,96Sr isotopes using high-intensity Californium Rare Isotope Breeder Upgrade beams. Radioactive beams of 94,95,96Rb β decay to populate highly excited states in 94,95,96Sr. The γ decay of these states is measured using total absorption spectroscopy. From the measured γ-ray spectra, the γSF and NLD are extracted using the β-Oslo Method. These experimentally-determined nuclear statistical properties significantly reduced the uncertainty in the resulting Hauser-Feshbach calculated neutron-capture reaction rates. The preliminary results of this work include the NLD, γSF, and 93,94,95Sr(n,γ)94,95,96Sr cross section. Furthermore, this work will shed light on nuclear structure properties for Sr isotopes, leading to significantly improved predictive reaction modeling.
*Prepared by LLNL under Contract DE-AC52-07NA27344.
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