Stellar (n,gamma) cross sections of p-process isotopes Part I: Pd-102, Te-120, Ba-130,Ba-132, and Dy-156

I. Dillmann, C. Domingo-Pardo, M. Heil, F. Kaeppeler, S. Walter, S. Dababneh, T. Rauscher, Friedrich-Karl Thielemann

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Abstract

We have investigated the (n,gamma) cross sections of p-process isotopes with the activation technique. The measurements were carried out at the Karlsruhe Van de Graaff accelerator using the Li-7(p, n) Be-7 source for simulating a Maxwellian neutron distribution of kT = 25 keV. Stellar cross section measurements are reported for the light p-process isotopes Pd-102, Te-120, Ba-130,Ba-132, and Dy-156. In a following paper the cross sections of Yb-168, W-180, Os-184, Pt-190, and Hg-196 will be discussed. The data are extrapolated to p-process energies by including information from evaluated nuclear data libraries. The results are compared to standard Hauser-Feshbach models frequently used in astrophysics.

Original languageEnglish
Article number015801
Number of pages13
JournalPhysical Review C (nuclear physics)
Volume81
Issue number1
DOIs
Publication statusPublished - Jan 2010

Keywords

  • STARS
  • ATOMIC WEIGHTS
  • STATISTICAL-MODEL CALCULATIONS
  • NUCLEAR-DATA LIBRARY
  • ELEMENTS
  • ASTROPHYSICAL REACTION-RATES
  • NUCLEOSYNTHESIS
  • RP-PROCESS
  • DATA SHEETS
  • TELLURIUM

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