Phys.Rev. C 93, 034323 (2016)

V.Werner, N.Cooper, J.-M.Regis, M.Rudigier, E.Williams, J.Jolie, R.B.Cakirli, R.F.Casten, T.Ahn, V.Anagnostatou, Z.Berant, M.Bonett-Matiz, M.Elvers, A.Heinz, G.Ilie, D.Radeck, D.Savran, M.K.Smith

Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei

RADIOACTIVITY ¹⁶⁸Ta(EC)[from ¹⁵⁹Tb(¹⁶O, 7n), E=130 MeV]; ¹⁷⁴Re(EC)[from ¹⁶⁹Tm(¹²C, 7n), E=115 MeV]; ¹⁵²Eu(EC); measured Eγ, γγ-coin, γγ(t) using fast timing system at WNSL-Yale University. ¹⁶⁸Hf, ¹⁷⁴W; deduced levels, half-lives and B(E2) of first 2+ states. Comparison with previous experimental results. Systematics and analysis in terms of differentials of B(E2) values of the first 2+ states for ^{162,164,166,168,170,172,174,176,178}Hf, ^{164,166,168,170,172,174,176,178,180}W.

doi: 10.1103/PhysRevC.93.034323