Identification of excited states in the T-z=1 nucleus Xe-110: Evidence for enhanced collectivity near the N=Z=50 double shell closure
Tarih
2007Yazar
Petri, M.
Rahkila, P.
Saren, J.
Scholey, C.
Sorri, J.
UUSITALO, J.
WADSWORTH, R.
Wyss, R.
Ganioglu, Ela
Sandzelius, M.
Hadinia, B.
Cederwall, B.
Andgren, K.
DARBY, I. G.
DIMMOCK, M. R.
Eeckhaudt, S.
GRAHN, T.
GREENLEES, P. T.
Ideguchi, E.
JONES, P. M.
JOSS, D. T.
Julin, R.
Juutinen, S.
Khaplanov, A.
Leino, M.
Nelson, L.
Niikura, M.
Nyman, M.
PAGE, R. D.
PAKARINEN, J.
PAUL, E. S.
Üst veri
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Gamma-ray transitions have been identified for the first time in the extremely neutron-deficient (N=Z+2) nucleus Xe-110, and the energies of the three lowest excited states in the ground-state band have been deduced. The results establish a breaking of the normal trend of increasing first excited 2(+) and 4(+) level energies as a function of the decreasing neutron number as the N=50 major shell gap is approached for the neutron-deficient Xe isotopes. This unusual feature is suggested to be an effect of enhanced collectivity, possibly arising from isoscalar n-p interactions becoming increasingly important close to the N=Z line.
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