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Mass measurements in the vicinity of the rp-process and the νp-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

Abstract : The masses of very neutron-deficient nuclides close to the astrophysical rp- and νp-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyväskylä and SHIPTRAP at GSI/Darmstadt. Isotopes from yttrium (Z=39) to palladium (Z=46) have been produced in heavy-ion fusion-evaporation reactions. In total, 21 nuclides were studied, and almost half of the mass values were experimentally determined for the first time: Tc88, Ru90-92, Rh92-94, and Pd94,95. For the Pd95m, (21/2+) high-spin state, a first direct mass determination was performed. Relative mass uncertainties of typically δm/m=5×10-8 were obtained. The impact of the new mass values has been studied in νp-process nucleosynthesis calculations. The resulting reaction flow and the final abundances are compared with those obtained with the data of the Atomic Mass Evaluation 2003.
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http://hal.in2p3.fr/in2p3-00854508
Contributor : Christine Hadrossek <>
Submitted on : Tuesday, August 27, 2013 - 2:23:21 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:30 PM

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C. Weber, V.-V. Elomaa, R. Ferrer, C. Fröhlich, D. Ackermann, et al.. Mass measurements in the vicinity of the rp-process and the νp-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP. Physical Review C, American Physical Society, 2008, 78, pp.054310. ⟨10.1103/PHYSREVC.78.054310⟩. ⟨in2p3-00854508⟩

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