@inproceedings{96deee9c4100449da3cfee8eab9c21a3,
title = "Evidence for enhanced collectivity in Te-I-Xe nuclei near the N=Z=50 double shell closure",
abstract = "Gamma-ray transitions have been identified for the first time in the extremely neutron-deficient T-z = 1 nuclide Xe-110 and the energies of the three lowest excited states in the ground-state band have been deduced. A level scheme has also been constructed for the proton-unbound, T-z = 3/2 nuclide I-109, exhibiting band structures built on g(7/2) and h(11/2) states in a weakly deformed, triaxial nucleus. In addition, a third band is proposed to be bui It oil a g(7/2) orbital coupled to an octupole-vibrational phonon of the Te-108 core. The results were obtained in a recoil-decay tagging experiment using the Ni-58(Fe-54,2n/p2n) reaction at a beam energy of 195 MeV. The experiment was performed using the highly efficient JUROGAM y-ray spectrometer in conjunction with the RITU gas-filled recoil separator and the GREAT focal -plane spectrometer. The results on Xe-110 establish a breaking of the normal trend of increasing first excited 2(+) and 4(+) level energies as a function of 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. Features in the low-lying levels of Te-106 and I-109, showing similar trends, are also discussed.",
keywords = "STATES, proton dripline, DEFORMATION, recoil-decay tagging, gamma-ray spectroscopy, EVEN-EVEN NUCLEI",
author = "B. Cederwall and B. Hadinia and M. Sandzelius and Paul, {E. S.} and A. Petri and K. Andgren and E. Ganioglu and Darby, {I. G.} and Dimmock, {M. R.} and S. Eeckhaudt and T. Grahn and Greenlees, {P. T.} and E. Ideguchi and Jones, {P. M.} and Joss, {D. T.} and R. Julin and S. Juutinen and A. Khaplanov and M. Leino and L. Nelson and M. Niikura and M. Nyman and Page, {R. D.} and J. Pakarinen and Marina Petri and P. Rahkila and J. Saren and C. Scholey and J. Sorri and J. Uusitalo and R. Wadsworth and R. Wyss",
year = "2007",
language = "English",
isbn = "978-0-7354-0475-5",
series = "AIP CONFERENCE PROCEEDINGS",
publisher = "American Institute of Physics",
pages = "156--162",
editor = "LS Ferreira and P Arumugam",
booktitle = "PROTON EMITTING NUCLEI AND RELATED TOPICS",
address = "United States",
note = "International Conference on Proton Emitting Nuclei and Related Topics ; Conference date: 17-06-2007 Through 23-06-2007",
}