Published July 19, 2017 | Version v1
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Neutron capture cross section measurement of 151 Sm at the CERN neutron time of flight facility (n_TOF)

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The151Sm(n,γ)152Sm cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The 151Sm cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of   kT=30  keV the Maxwellian averaged cross section of this unstable isotope (t1/2=93  yr) was determined to be 3100±160  mb, significantly larger than theoretical predictions.

Abstract

Comisión Europea FIKW-CT-2000-00107

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URL
https://idus.us.es/handle/11441/62694
URN
urn:oai:idus.us.es:11441/62694

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