Open Access
Issue
ND 2007
2007
Article Number 154
Number of page(s) 4
Section Neutron cross section measurements
DOI https://doi.org/10.1051/ndata:07600
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07600

Neutron capture measurements on Tl-isotopes at DANCE

A. Couture1, R. Reifarth1, 2, J.D. Baker3, T.A. Bredeweg1, R.C. Haight1, M. Jandel1, A.F. Mertz1, 4, J.M. O'Donnell1, R.S. Rundberg1, J.L. Ullmann1, D.J. Viera1 and J.M. Wouters1

1  Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2  Gesellschaft für Schwerionenforschung mbH, Darmstadt, 64291, Germany
3  Idaho National Laboratory, Idaho Falls, ID 83415, USA
4  Yale University, Department of Physics, New Haven, CT 06520, USA

acouture@lanl.gov
r.reifarth@gsi.de

Published online: 21 May 2008

Abstract
The thallium isotopes play an important role in the s-process nucleosynthesis at the s-process endpoint. Furthermore, 204Tl is one of few branch point isotopes in the endpoint region. The understanding of branch point isotopes provides modeling constraints on the temperatures and neutron densities during which the process takes place. The production of s-only 204Pb is controlled almost entirely by 204Tl. Measurements of the capture cross-sections of the stable Tl isotopes have recently been made using the DANCE 4π array at LANSCE. This provides needed resonance information in the region as well as preparing the way for measurements of as yet unmeasured capture cross-section of the unstable 204Tl.



© CEA 2008

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