Measurement of 73Ge(n,g) cross sections and implications for stellar nucleosynthesis
Abstract
73Ge(n,g) cross sections were measured at the neutron time-of-flight facility nTOF at CERN up to neutron energies of 300 keV, providing for the first time experimental data above 8 keV. Results indicate that the stellar cross section at kT = 30 keV is 1.5 to 1.7 times higher than most theoretical predictions. The new cross sections result in a substantial decrease of 73Ge produced in stars, which would explain the low isotopic abundance of 73Ge in the solar system.
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