Publications
Measurement of (n, gamma) reaction cross sections at stellar energies for 58Ni and 78Se
- Author(s)
- Georg Rugel, Iris Dillmann, Thomas Faestermann, Michael Heil, Franz Käppeler, Klaus Knie, Gunther Korschinek, Walter Kutschera, Michail Poutivtsev, Anton Wallner
- Abstract
The energy averaged (n, ?) cross sections of 58Ni and 78Se at a stellar energy of kT = 25 keV have been investigated with the so called activation technique, which represents a well established tool for measurements of stellar neutron cross sections. For both nuclides, offline decay counting is prohibitive due to the long half-lives of the reaction products as well as the absence of suitable ?-ray transitions. The measurements reported here are, therefore, based on accelerator mass spectrometry (AMS) determination of the number of 59Ni and 79Se nuclei produced by irradiation of Ni and Se targets in a quasi-stellar neutron spectrum. We present in this paper preliminary results of ?exp(kT = 25 keV) = 27.2 ± 1.8 mb and 61 ± 10 mb for neutron capture cross sections of 58Ni and 78Se, respectively. © 2007 Elsevier B.V. All rights reserved.
- Organisation(s)
- Isotope Physics
- External organisation(s)
- Technische Universität München, Universität Basel, Karlsruher Institut für Technologie
- Journal
- Nuclear Instruments & Methods in Physics Research. Section B. Beam Interactions with Materials and Atoms
- Volume
- 259
- Pages
- 683-687
- No. of pages
- 5
- ISSN
- 0168-583X
- DOI
- https://doi.org/10.1016/j.nimb.2007.01.206
- Publication date
- 2007
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103005 Atomic physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/measurement-of-n-gamma-reaction-cross-sections-at-stellar-energies-for-58ni-and-78se(49909eeb-2a30-47d3-aecd-2ade2990cf94).html