Published 2008 | Version v1
Book

Improved lead and bismuth (n,γ) cross sections and their astrophysical impact

Description

A series of (n,γ) neutron capture measurements on the lead isotopes and bismuth have been carried out at the CERN n-TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n-TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved γ-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt γ-rays were investigated via Monte Carlo simulations and could be taken into account in the analysis of the capture data. With this set of measurements the energy differential (n,γ) cross sections of 204,206,207Pb and 209Bi have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmo-chronometer. (authors)

Part of:
Proceedings of the 2007 International Conference on Nuclear Data for Science and Technology - ND 2007

Additional details

Identifiers

Publishing Information

Publisher
EDP Sciences
Imprint Place
Les Ulis (France)
ISBN
978-2-7598-0090-2; 978-2-7598-0091-9
Imprint Title
Proceedings of the 2007 International Conference on Nuclear Data for Science and Technology - ND 2007
Imprint Pagination
1422 p.
Journal Page Range
p. 1311-1314

Conference

Title
2007 International Conference on Nuclear Data for Science and Technology - ND 2007
Dates
22-27 Apr 2007
Place
Nice (France)

Optional Information

Notes
38 refs.; Full text available on Internet at: http://dx.doi.org/10.1051/ndata:07493