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Radiative strength of neutron-rich strontium isotopes

ORAL

Abstract

Our understanding of neutron-induced reactions on nuclei far from stability has far reaching implications for cosmogenic nucleosynthesis and fundamental nuclear physics. Direct measurement of the radiative-capture cross section is experimentally inaccessible for these short-lived nuclei; however, indirect methods such as the β-Oslo Method enable the experimental constraint of key nuclear properties that are inputs for reaction-theory calculations.

An experiment to determine the γ-ray strength function (γSF) and nuclear level density (NLD) for 93,94,95Sr isotopes using high-intensity Californium Rare Isotope Breeder Upgrade (CARIBU) beams is being performed at Argonne National Laboratory (ANL). The γSF and NLD, properties extracted from the measured γ-ray spectra using the β-Oslo Method, contribute the greatest uncertainty in Hauser-Feshbach calculations of neutron-capture reaction rates for short-lived neutron-rich nuclei. The experimental techniques and preliminary results of this work will be presented. Furthermore, the results of this work will shed light on nuclear structure properties for Sr isotopes, leading to significantly improved predictive reaction modeling.

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Presenters

  • Adriana Sweet

    Lawrence Livermore Natl Lab, University of California, Berkeley

Authors

  • Adriana Sweet

    Lawrence Livermore Natl Lab, University of California, Berkeley

  • Darren L Bleuel

    Lawrence Livermore Natl Lab

  • Nicholas D Scielzo

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Lee A Bernstein

    Lawrence Berkeley National Laboratory, UC Berkeley, Lawrence Berkeley Natl Lab

  • Jason A Clark

    Argonne National Laboratory

  • Katherine L Childers

    Michigan State University, NSCL/FRIB, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Alexander C Dombos

    University of Notre Dame, FRIB

  • Frank L. B. Garrote

    University of Oslo

  • Bethany L Goldblum

    Lawrence Berkeley National Laboratory; University of California Berkeley, UC Berkeley, Lawrence Berkeley Natl Lab

  • Andreas Gorgen

    University of Oslo

  • Magne Guttormsen

    University of Oslo

  • Caley Harris

    Michigan State University, NSCL/FRIB, Michigan State University, FRIB

  • Ann-Cecilie Larsen

    University of Oslo, Univ of Oslo

  • Rebecca Lewis

    Michigan State University, NSCL/FRIB, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Sean N Liddick

    National Superconducting Cyclotron Laboratory, Michigan State University, NSCL/FRIB, NSCL, National Superconducting Cyclotron Laboratory; Department of Chemistry, Michigan State University, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Stephanie Lyons

    Pacific Northwest National Laboratory, Michigan State University, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB

  • Farheen Naqvi

    University of Notre Dame

  • Alicia Palmisano

    Michigan State University, NSCL/FRIB, Michigan State University, UTK, FRIB, University of Tennessee

  • Andrea L Richard

    Lawrence Livermore Natl Lab, National Superconducting Cyclotron Labor, Lawrence Livermore National Laboratory

  • Debra Richman

    Michigan State University, NSCL/FRIB, FRIB

  • Daniel Santiago-Gonzalez

    Argonne National Laboratory

  • Guy Savard

    Argonne National Laboratory

  • Sunniva Siem

    University of Oslo

  • Mallory K Smith

    Michigan State University, NSCL/FRIB, National Superconducting Cyclotron Laboratory; Michigan State University, FRIB, Michigan State University, NSCL

  • Artemis Spyrou

    Michigan State University, Michigan State University, NSCL/FRIB, FRIB

  • Jasmina Vujic

    UC Berkeley

  • Mathis Wiedeking

    iThemba LABS, University of the Witwatersrand, iThemba LABS