Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session L09: Nuclear Astrophysics V
9:00 AM–12:00 PM,
Friday, December 1, 2023
Hilton Waikoloa Village
Room: Kohala 2
Chair: Stephanie Lyons, Pacific Northwest National Laboratory
Abstract: L09.00002 : Mass Measurements of 119g,mCd and 119g,mAg Astromers with the Canadian Penning Trap*
9:15 AM–9:30 AM
Presenter:
Fabio Rivero
(University of Notre Dame)
Authors:
Fabio Rivero
(University of Notre Dame)
Maxime Brodeur
(University of Notre Dame)
Jason A Clark
(Argonne National Laboratory)
Aaron T Gallant
(Lawrence Livermore Natl Lab)
Daniel E Hoff
(Lawrence Livermore National Laboratory)
Kay Kolos
(LLNL)
Filip G Kondev
(Argonne National Laboratory)
Biying Liu
(University of Notre Dame)
G. Wendell Misch
(Los Alamos National Laboratory)
G. E Morgan
(Argonne National Laboratory)
Matthew R Mumpower
(LANL)
Rodney Orford
(Lawrence Berkeley National Laboratory)
William S Porter
(University of Notre Dame)
Dwaipayan Ray
(U. Manitoba)
Daniel Santiago-Gonzalez
(Argonne National Laboratory)
Guy Savard
(Argonne National Laboratory)
Kumar S Sharma
(U. Manitoba)
Adrian A Valverde
(Argonne National Laboratory)
Louis Varriano
(University of Chicago)
Precise nuclear mass measurements are becoming increasingly important as models of nucleosynthesis continue to evolve. Of particular interest are neutron rich nuclei along the r-process path. In order to discern which conditions are necessary for this chain of nucleosynthesis to take place, astrophysical models must be able to accurately reproduce observed isotopic abundances. For this task they need access to large volumes of precise nuclear data such as half-lives, branching ratios, masses, and isomeric states. Recent developments indicate that isomeric states can play a significant role in the r-process. To that end the Canadian Penning Trap (CPT) was used in an extensive campaign to search for astrophysically relevant isomers – so called “astromers” – along the r-process pathway. This presentation will present the mass measurement of the ground states and isomer states of 119Cd and 119Ag.
*This work is supported in part by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357; by NSERC (Canada), Application No. SAPPJ-2018-00028; by the National Science Foundation under Grant No. PHY-2011890; by the University of Notre Dame; and with resources of ANL's ATLAS facility, an Office of Science User Facility.
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