Measurement of the 58Ni(n,γ) reaction at stellar energies

Tuesday, 6 September 2005 - 2:20 PM

This presentation is part of: Astrophysics and Cosmochemistry

Measurement of the ⁵⁸Ni(n,γ) reaction at stellar energies

Georg Rugel¹, Thomas Faestermann¹, Klaus Knie¹, Gunther Korschinek¹, Mikhail Poutivtsev¹, Michael Heil², Franz Kaeppeler², Iris Dillmann², and Anton Wallner¹. (1) Fakultät für Physik, Technische Universität München, Garching, D-85748, Germany, (2) Institut fuer Kernphysik, Forschungszentrum Karlsruhe, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

To understand stellar nucleosynthesis neutron capture cross sections at stellar energies (some 10⁴ eV) are needed. In this work nickel targets have been irradiated at Forschungszentrum Karlsruhe in a quasi-stellar neutron spectrum corresponding to a thermal energy of kT = 25 keV. After a chemical treatment the ⁵⁹Ni produced via ⁵⁸Ni(n,γ) has been measured at the gas-filled analyzing magnet system in Munich.

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