Phys.Rev. C 100, 024312 (2019)

P.Petkov, C.Muller-Gatermann, D.Werner, A.Dewald, A.Blazhev, C.Fransen, J.Jolie, S.Ohkubo, K.O.Zell

New lifetime measurements for the lowest quadrupole states in ^{20, 22}Ne and possible explanations of the high collectivity of the depopulating E2 transitions

NUCLEAR REACTIONS ⁹Be, Mg(¹⁶O, X)²⁰Ne, E=30, 33, 36, 38 MeV; ⁹Be, Mg(¹⁸O, X)²²Ne, E=33 MeV; measured Eγ, Iγ, γγ-coin, stopping powers, level half-lives by DSAM and line-shape analysis using an array of twelve HPGe detectors, and Cologne coincidence plunger set up at the tandem accelerator of the University of Cologne. ^20,22Ne; deduced levels, B(E2). Comparison with shell-model and configuration-mixing calculations, and with previous experimental data. Discussed angular momentum dependence of the B(E2) transition strengths between the yrast states.

doi: 10.1103/PhysRevC.100.024312