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First Proton-Induced Cross Sections on a Stored Rare Ion Beam: Measurement of ^{118}Te(p,γ) for Explosive
S F Dellmann1,2, J Glorius3, Yu A Litvinov3
1Goethe Universität, Frankfurt am Main, Germany.
Abstract:
We present the first nuclear cross-section measurements of (p,γ) and (p,n) reactions on ^{118}Te at energies relevant for the γ-process nucleosynthesis. Absolute cross-section values for center-of-mass energies of 6, 7 and 10 MeV are provided, together with a theoretical extrapolation to the Gamow window. This experiment marks the first time that direct proton-induced reactions have been measured on a radioactive ion beam at the Experimental Storage Ring (ESR) at GSI, Darmstadt. This paves the way for a large variety of measurements, delivering new constraints for explosive nucleosynthesis and for physics beyond nuclear stability.
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