May 11, 2015 Preprint Open Access

Lorusso, G.; et al.

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  <dc:creator>Lorusso, G.</dc:creator>
  <dc:creator>et al.</dc:creator>
  <dc:date>2015-05-11</dc:date>
  <dc:description>The β-decay half-lives of 110 neutron-rich isotopes of the elements from 37 Rb to ₅₀Sn were measured at the Radioactive Isotope Beam Factory. The 40 new half-lives follow robust systematics and highlight the persistence of shell effects. The new data have direct implications for r-process calculations and reinforce the notion that the second (A≈130) and the rare-earth-element (A≈160) abundance peaks may result from the freeze-out of an (n,γ)⇄(γ,n) equilibrium. In such an equilibrium, the new half-lives are important factors determining the abundance of rare-earth elements, and allow for a more reliable discussion of the r process universality. It is anticipated that universality may not extend to the elements Sn, Sb, I, and Cs, making the detection of these elements in metal-poor stars of the utmost importance to determine the exact conditions of individual r-process events.</dc:description>
  <dc:identifier>https://www.openaccessrepository.it/record/75850</dc:identifier>
  <dc:identifier>10.15161/oar.it/75850</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>doi:10.1103/PhysRevLett.114.192501</dc:relation>
  <dc:relation>doi:10.15161/oar.it/75849</dc:relation>
  <dc:relation>url:https://www.openaccessrepository.it/communities/infn</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by/4.0/</dc:rights>
  <dc:subject>AAM</dc:subject>
  <dc:subject>20152019VQR</dc:subject>
  <dc:title>β-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N = 82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process</dc:title>
  <dc:type>info:eu-repo/semantics/preprint</dc:type>
  <dc:type>publication-preprint</dc:type>
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