Spectroscopy of the proton emitter {sup 109}I
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
Excited states in the proton-unbound nucleus {sup 109}I were populated using the {sup 54}Fe({sup 58}Ni,p2n) reaction at a beam energy of 220 MeV. Gamma rays in {sup 109}I were identified using the recoil-decay tagging technique. The analysis of proton-correlated {gamma}{gamma} coincidence data produced the yrast decay sequence in {sup 109}I, which can be tentatively assigned as built on the h{sub 11/2} proton state based on systematic trends in the neighboring isotopes. This sequence is completely different from that reported previously. A comparison of the h{sub 11/2} band in {sup 109}I with those in heavier iodines shows that {sup 109}I continues the trend of decreasing quadrupole deformation with decreasing neutron number. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 336708
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 59; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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