M Portillo | TrappedIons.org

TOF-Brho Mass Measurements of Very Exotic Nuclides for Astrophysical Calculations at the NSCL

M Matos, A Estrade [1,2,3], M Amthor [1,2,3], A Aprahamian [2,4], D Bazin [1], A Becerril [1,2,3], T Elliot [1,2,3], D Galaviz [1,2], A Gade [1,3], S Gupta [7], G Lorusso [1,2,3], F Montes [1,2], J Pereira [1,2], M Portillo [1], A M Rogers [1,2,3], H Schatz [1,2,3], D Shapira, E Smith [2,6], A Stolz [1], M Wallace [7]

Abstract

Atomic masses play a crucial role in many nuclear astrophysics calculations. The lack of experimental values for relevant exotic nuclides triggered a rapid development of new mass measurement devices around the world. The Time-of-Flight (TOF) mass measurements offer a complementary technique to the most precise one, Penning trap measurements, the latter being limited by the rate and half-lives of the ions of interest. The NSCL facility provides a well-suited infrastructure for TOF mass measurements of very exotic nuclei. At this facility, we have recently implemented a TOF-Brho technique and performed mass measurements of neutron-rich nuclides in the Fe region, important for r-process calculations and for calculations of processes occurring in the crust of accreting neutron stars.