Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Single particle excitations and properties of multiple band terminations near spin 50h{stroke} in 158Er
AU - Simpson, J.
AU - Riley, M.A.
AU - Gale, S.J.
AU - Sharpey-Schafer, J.F.
AU - Bentley, M.A.
AU - Bruce, A.M.
AU - Chapman, R.
AU - Clark, R.M.
AU - Clarke, S.
AU - Copnell, J.
AU - Cullen, D.M.
AU - Fallon, P.
AU - Fitzpatrick, A.
AU - Forsyth, P.D.
AU - Freeman, S.J.
AU - Jones, P.M.
AU - Joyce, M.J.
AU - Liden, F.
AU - Lisle, J.C.
AU - Macchiavelli, A.O.
AU - Smith, A.G.
AU - Smith, J.F.
AU - Sweeney, J.
AU - Thompson, D.M.
AU - Warburton, S.
AU - Wilson, J.N.
AU - Bengtsson, T.
AU - Ragnarsson, I.
PY - 1994
Y1 - 1994
N2 - The competition between collective rotation and single-particle behaviour at high spin in 158Er has been investigated with the Eurogam spectrometer. Band terminating states have been observed in three structures at Iπ = 46+, 48− and 49− and specific single-particle configurations are assigned by comparison with cranked Nilsson-Strutinsky calculations. These special states are found to be related by very simple single particle excitations. These data indicate that an oblate mean field (ϵ ∼ −0.14) is established for a nuclear core plus 12 aligned valence nucleons which is stable against single-particle rearrangements. In the (π, α) = (+, 0) states the collective and weakly collective terminating structures are observed to coexist between 30+ and 46+.
AB - The competition between collective rotation and single-particle behaviour at high spin in 158Er has been investigated with the Eurogam spectrometer. Band terminating states have been observed in three structures at Iπ = 46+, 48− and 49− and specific single-particle configurations are assigned by comparison with cranked Nilsson-Strutinsky calculations. These special states are found to be related by very simple single particle excitations. These data indicate that an oblate mean field (ϵ ∼ −0.14) is established for a nuclear core plus 12 aligned valence nucleons which is stable against single-particle rearrangements. In the (π, α) = (+, 0) states the collective and weakly collective terminating structures are observed to coexist between 30+ and 46+.
U2 - 10.1016/0370-2693(94)90716-1
DO - 10.1016/0370-2693(94)90716-1
M3 - Journal article
VL - 327
SP - 187
EP - 194
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 3-4
ER -