Identification of Excited States in theTz=1NucleusXe110: Evidence for Enhanced Collectivity near theN=Z=50Double Shell Closure
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ID: 268782
2007
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Abstract
Gamma-ray transitions have been identified for the first time in the extremely neutron-deficient (N=Z+2) nucleus Xe110, 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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| Authors | M. Sandzelius,B. Hadinia,B. Cederwall,K. Andgren,E. Ganioglu,I. G. Darby,M. R. Dimmock,S. Eeckhaudt,T. Grahn,P. T. Greenlees,E. Ideguchi,P. M. Jones,D. T. Joss,R. Julin,S. Juutinen,A. Khaplanov,M. Leino,L. Nelson,M. Niikura,M. Nyman,R. D. Page,Janne Pakarinen,E. S. Paul,Marina Petri,P. Rahkila,J. Sarén,Catherine Scholey,J. Sorri,J. Uusitalo,R. Wadsworth,R. Wyss;M. Sandzelius;B. Hadinia;B. Cederwall;K. Andgren;E. Ganioglu;I. G. Darby;M. R. Dimmock;S. Eeckhaudt;T. Grahn;P. T. Greenlees;E. Ideguchi;P. M. Jones;D. T. Joss;R. Julin;S. Juutinen;A. Khaplanov;M. Leino;L. Nelson;M. Niikura;M. Nyman;R. D. Page;Janne Pakarinen;E. S. Paul;Marina Petri;P. Rahkila;J. Sarén;Catherine Scholey;J. Sorri;J. Uusitalo;R. Wadsworth;R. Wyss; |
| Journal | physical review letters |
| Year | 2007 |
| DOI |
10.1103/physrevlett.99.022501
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| URL | |
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