Journal
PHYSICAL REVIEW LETTERS
Volume 108, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.022502
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Funding
- JINR Directorate
- U400 cyclotron and ion source crews
- Russian Foundation for Basic Research [11-02-12050, 11-02-12066]
- U.S. DOE Office of Nuclear Physics under DOE [DE-AC05-00OR22725]
- UT-Battelle, LLC
- LDRD [08-ERD-030]
- LDRD under DOE [DE-AC52-07NA27344]
- Lawrence Livermore National Security, LLC
- U.S. DOE [DE-FG-05-88ER40407]
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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 Am-243 + Ca-48 are presented. Twenty-one new decay chains originating from (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 (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, (289)115, which was also observed previously in the reaction Bk-249 + Ca-48 as the daughter nucleus of the decay of (293)117. The maximum cross section for the production of (288)115 is found to be 8.5 pb at E* approximate to 36 MeV.
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