Measurement of the (p,γ) Cross Sections of 46Ti, 64Zn, 114Sn and 116Sn at Astrophysically Relevant Energies

Astronomy and Astrophysics – Astrophysics

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Fission Reactor Types, Neutron Sources, Nuclear Matter

Scientific paper

The total cross sections for the 116Sn(p,γ)117Sb, 114Sn(p,γ)115Sb, 64Zn(p,γ)65Ga, and 46Ti(p,γ)47V reactions have been measured using an activation technique for protons with center-of-mass energies between about 1 and 4 MeV. Radiative proton captures on 116Sn and 64Zn are compared to previous measurements while extending the measured energy range. From these measurements, astrophysical S-factors have been deduced by integrating NON-SMOKER results which have been scaled to the deduced S-factors in the measured energy range. Comparisons are made to thermonuclear reaction rates from the MOST and NON-SMOKER statistical model calculations.

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