Title: Neutron Capture Measurements on the s-Process Termination Isotopes Lead and Bismuth
Authors: DOMINGO PARDO CésarPLOMPEN ARJANRULLHUSEN PETERN_TOF COLLABORATION The
Citation: Proceedings Of Science. Nuclear Astrophysics - Nuclei in the Cosmos IX vol. POS(NIC - IX) 058 p. 1-7
Publisher: Proceedings Of Science, SISSA
Publication Year: 2006
JRC N°: JRC36203
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC36203
Type: Contributions to Conferences
Abstract: The neutron capture cross sections of 204Pb and 206Pb have been measured at the CERN n_TOF installation using the time of flight method with the pulse height weighting technique. In a preliminary analysis of 204Pb we have determined by first time the capture cross sections for two strong s-wave resonances below 2.5 keV, which seem to enhance the Maxwellian Averaged Cross Section at kT = 5 keV by about a factor of two with respect to the value assumed so far [1, 2]. In 206Pb we have determined capture cross sections for a large number (97) of resonances, which were not reported in the two previous capture measurements [3, 4]. We discuss preliminary implications of the new cross sections in the stellar nucleosynthesis of the Pb isotopes.
JRC Institute:Institute for Reference Materials and Measurements

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