Spin precession of unresolved high-spin states in 153–156Dy

Häusser, O.; Ward, D. R.; Andrews, H.R.; Taras, P.; Haas, B.; Deleplanque, M. A.; Diamond, R. M.; Dines, E.L.; Macchiavelli, A. O.; McDonald, R. J.; Stephens, F. S.; Stager, C. V.

doi:10.1016/0370-2693(84)91274-7

Cited by 16 publications

(1 citation statement)

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“…Cranked-Shell Model calculations are able to reproduce the experimental yrast line [11]. The isomeric states found in these nuclei, as well as measurements of half lives and g-factors [12][13][14], confirm on the whole the dominant quasi-particle structure of the states in the discrete yrast sequence, even if an interplay between single-particle and coherent excitation of several nucleons is likely to be involved in the high-spin region of N =84-86 isotopes.…”

Section: Introductionmentioning

confidence: 68%

Decay properties of very-high-spin states in transitional Er nuclei aroundA=154

Bogaert

Aguer

Bastin

et al. 1986

Z. Physik A - Atomic Nuclei

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The 7 ray continuum structures of the transitional Er isotopes with A ~ 154 are studied using the reaction 74Ge(8r xn) lS8-XEr at El, b = 340 MeV. The measurements include energy spectra, total energies, multiplicities, angular distributions and lifetimes using the DSAM method. The analysis of data confirms the previously observed two-bump structure of the continuum radiation. A meticulous subtraction of discrete contributions proves the persistence of the low-energy bump even at high spins, i.e. I>40 h. The angular -distribution measurements assign predominant dipole structure to the bump at E~ =0.65 MeV, whereas the bump at E~ = 1.3 MeV is of almost pure quadrupole character at high spins. The lifetime measurements give evidence for a strong enhancement of the B(E2) values of the upper bump, B(E2)/Bsp>130. Spin-selection studies reveal, in the spin range I=30-50h an almost constant energy for the 1.3MeV bump, AE<60 keV.

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