New Insights into the 243Am 48Ca Reaction Products Previously Observed in the Experiments on Elements 113, 115, and 117
- FLNR-JINR, Russia
- Joint Institute for Nuclear Research, Dubna, Russia
- Lawrence Livermore National Laboratory (LLNL)
- Vanderbilt University
- ORNL
Results of a new series of experiments on the study of production cross sections and decay properties of the isotopes of element 115 in the reaction {sup 243}Am + {sup 48}Ca are presented. Twenty-one new decay chains originating from {sup 288}115 were established as the product of the 3n-evaporation channel by measuring the excitation function at three excitation energies of the compound nucleus {sup 291}115. The decay properties of all newly observed nuclei are in full agreement with those we measured in 2003. At the lowest excitation energy E* = 33 MeV, for the first time we registered the product of the 2n-evaporation channel, {sup 289}115, which was also observed previously in the reaction {sup 249}Bk + {sup 48}Ca as the daughter nucleus of the decay of {sup 293}117. The maximum cross section for the production of {sup 288}115 is found to be 8.5 pb at E* {approx} 36 MeV.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Other RIB Facility
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1050949
- Journal Information:
- Physical Review Letters, Vol. 108, Issue 2; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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