Phys.Rev. C 106, 064302 (2022)

X.Xiao, S.Y.Wang, C.Liu, R.A.Bark, J.Meng, S.Q.Zhang, B.Qi, H.Hua, P.Jones, S.M.Wyngaardt, S.Wang, D.P.Sun, Z.Q.Li, N.B.Zhang, H.Jia, R.J.Guo, X.C.Han, L.Mu, X.Lu, W.Z.Xu, C.Y.Niu, C.G.Wang, E.A.Lawrie, J.J.Lawrie, J.F.Sharpey-Schafer, M.Wiedeking, S.N.T.Majola, T.D.Bucher, T.Dinoko, B.Maqabuka, L.Makhathini, L.Mdletshe, N.A.Khumalo, O.Shirinda, K.Sowazi

Chirality and octupole correlations in ⁷⁴As

NUCLEAR REACTIONS ⁷⁴Ge(α, 3np), E=58.6, 62.6 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). ⁷⁴As; deduced levels, J, π, angular distributions from the oriented states (ADO) ratio, polarization asymmetry, bands structure, high-spin states, configurations, energy staggering parameter, B(M1)/B(E2) and B(E2)/B(E1) ratios, energy displacement between bands. Systematics of the excitation energies for the yrast states above I=7 in ^70,72,74As. Positive-parity bands are interpreted as chiral doublet bands. Found experimental evidence of octupole correlations existence in ⁷⁴As, similar to ⁷³Br. Comparison to triaxial particle rotor model (TPRM) calculations. AFRODITE array consisting of 8 Compton suppressed clover detectors and 2 low-energy photon spectrometer (LEPS) detectors at separated Sector Cyclotron of iThemba LABS.

doi: 10.1103/PhysRevC.106.064302