Phys.Rev. C 103, 054309 (2021)

B.Longfellow, D.Weisshaar, A.Gade, B.A.Brown, D.Bazin, K.W.Brown, B.Elman, J.Pereira, D.Rhodes, M.Spieker

Quadrupole collectivity in the neutron-rich sulfur isotopes ^{38, 40, 42, 44}S

NUCLEAR REACTIONS ²⁰⁹Bi(³⁸S, ³⁸S'), E=75 MeV; ²⁰⁹Bi(⁴⁰S, ⁴⁰S'), E=76 MeV; ²⁰⁹Bi(⁴²S, ⁴²S'), E=80 MeV; ²⁰⁹Bi(⁴⁴S, ⁴⁴S'), E=73 MeV, [secondary ^38,40,42,44S beams from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon primary reaction, followed by separation of fragments using A1900 fragment separator at the NSCL-MSU facility]; measured reaction products, particle identification from energy loss and time of flight, Eγ, Iγ, (scattered S ions)γ-coin using S800 spectrograph for particles and CAESAR array of 192 CsI(Na) detectors for γ rays in intermediate-energy Coulomb excitation. ^38,40,42,44S; deduced levels, B(E2) for the first 2+ states from Coulomb excitation yields and Alder-Winther model. Comparison with previous experimental results, and with predictions of shell-model calculations using the SDPF-MU Hamiltonian. Systematics of B(E2) values for the first 2+ states in ^{36,38,40,42,44,46}S, ^{36,38,40,42,44,46,48}Ar, ^{42,44,46,48,50}Ca.

doi: 10.1103/PhysRevC.103.054309