Title: High-Resolution Neutron Transmission and Capture Measurements of the Nucleus 206Pb
Authors: BORELLA ALESSANDROGUNSING FrankMOXON MichaelSCHILLEBEECKX PETERSIEGLER PETER
Citation: PHYSICAL REVIEW C vol. 76 p. 014605-1 014605-18
Publisher: AMERICAN PHYSICAL SOC
Publication Year: 2007
JRC N°: JRC40154
ISSN: 0556-2813
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC40154
DOI: 10.1103/PhysRevC.76.014605
Type: Articles in Journals
Abstract: Neutron total and capture reaction cross-section measurements for 206Pb were performed at the GELINA neutron time-of-flight facility in the energy range from 1 to 620 keV. The resonance parameters corresponding to 304 excited nuclear levels in 207Pb were determined from the data using the R-matrix formalism. The results are compared to existing data. From the capture data photon strength functions have been deduced. No evidence has been found for a previously reported enhancement of the M1 transition strength, nor for a strong enhancement of the s-wave doorway state in the photon channel. The neutron capture cross section of 206Pb is of importance in stellar evolution calculations of the formation of the elements by neutron capture. Maxwellian-averaged neutron capture cross sections have been calculated at different stellar temperatures ranging up to 100 keV and compared with the results of previous work and evaluated data libraries.
JRC Institute:Institute for Reference Materials and Measurements

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