Phys.Rev. C 103, 014323 (2021)

J.Surbrook, G.Bollen, M.Brodeur, A.Hamaker, D.Perez-Loureiro, D.Puentes, C.Nicoloff, M.Redshaw, R.Ringle, S.Schwarz, C.S.Sumithrarachchi, L.J.Sun, A.A.Valverde, A.C.C.Villari, C.Wrede, I.T.Yandow

First Penning trap mass measurement of ³⁶Ca

ATOMIC MASSES ³⁶Ca; measured masses of ³⁶Ca⁺ and ³⁶Ca²⁺ by the time-of-flight ion cyclotron resonance method using the LEBIT 9.4 T Penning-trap facility at NSCL-MSU; deduced mass excess and compared with AME2016 evaluation; interpreted result in the context of the isobaric multiplet mass equation (IMME) and a new ab initio derived calculation that extends the IMME with excellent agreement in the A=36, T=2 isobaric multiplet with the quadratic IMME, and only qualitative agreement with the generalized IMME (GIMME) predictions. Radioactive beam of ³⁶Ca produced in ⁹Be(⁴⁰Ca, X), E=140 MeV/nucleon at the Coupled Cyclotron Facility, followed by selection and purification by A1900 fragment separator.

doi: 10.1103/PhysRevC.103.014323