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Penning trap mass measurements on (99-109)$Cd with ISOLTRAP and implications on the rp process

Abstract : Penning trap mass measurements on neutron-deficient Cd isotopes (99-109)Cd have been performed with the ISOLTRAP mass spectrometer at ISOLDE/CERN, all with relative mass uncertainties below 3*10^8. A new mass evaluation has been performed. The mass of 99Cd has been determined for the first time which extends the region of accurately known mass values towards the doubly magic nucleus 100Sn. The implication of the results on the reaction path of the rp process in stellar X-ray bursts is discussed. In particular, the uncertainty of the abundance and the overproduction created by the rp-process for the mass A = 99 is demonstrated by reducing the uncertainty of the proton-separation energy of 100In Sp(100In) by a factor of 2.5.
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Submitted on : Monday, January 17, 2011 - 1:25:41 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:36 PM

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M. Breitenfeldt, G. Audi, D. Beck, K. Blaum, S. George, et al.. Penning trap mass measurements on (99-109)$Cd with ISOLTRAP and implications on the rp process. Physical Review C, American Physical Society, 2009, 80, pp.035805. ⟨10.1103/PhysRevC.80.035805⟩. ⟨in2p3-00556618⟩

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