Phys.Rev. C 101, 064309 (2020)

D.Puentes, G.Bollen, M.Brodeur, M.Eibach, K.Gulyuz, A.Hamaker, C.Izzo, S.M.Lenzi, M.MacCormick, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, P.Schury, N.A.Smirnova, J.Surbrook, A.A.Valverde, A.C.C.Villari, I.T.Yandow

High-precision mass measurements of the isomeric and ground states of ⁴⁴V: Improving constraints on the isobaric multiplet mass equation parameters of the A=44, 0⁺ quintet

ATOMIC MASSES ^44,44mV; measured cyclotron frequencies, mass excesses of ground and isomeric state using the time-of-flight ion cyclotron resonance method with the Penning trap mass spectrometer LEBIT of NSCL-MSU. ⁴⁴V beam was produced in ⁹Be(⁵⁸Ni, X), E=160 MeV/nucleon reaction and purified in the A1900 Fragment Separator. ⁴⁴V; deduced levels, J, π, energy of the isomeric state, S(p). ⁴⁴Cr; discussed β⁺ and proton decay of ⁴⁴Cr and constraint on its mass. ⁴⁴V, ⁴⁴Sc, ⁴⁴Ti; analyzed coefficients of quadratic isobaric multiplet mass equation (IMME) coefficients, mirror and triplet energy differences of T=1 triplet as a function of spin. A=42-58; analyzed experimental and theoretical coefficients of the lowest triplets in the pf shell for even-A nuclei. Comparison with previous experimental values, and with theoretical predictions.

doi: 10.1103/PhysRevC.101.064309