Stellar (n, γ) cross sections of neutron-rich nuclei

Details Stellar (n, γ) cross sections of neutron-rich nuclei Stellar (n, γ) cross sections of neutron-rich nuclei

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1213..219m&link_type=abstract

FIFTH EUROPEAN SUMMER SCHOOL ON EXPERIMENTAL NUCLEAR ASTROPHYSICS. AIP Conference Proceedings, Volume 1213, pp. 219-221 (2010).

Astronomy and Astrophysics

Astrophysics

Nucleosynthesis, Particle Accelerators, Neutron-Deuteron Scattering, Gamma-Rays, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Electrostatic Accelerators, Inelastic Neutron Scattering, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

The present measurements were performed by means of the activation technique. Neutrons were produced at the Karlsruhe Van de Graaff accelerator via the 7Li(p,n)7Be reaction. For proton energies just above threshold, one obtains a neutron spectrum similar to a Maxwellian distribution for kT = 25 keV. This quasi-stellar neutron spectrum allowed us to measure the Maxwellian averaged cross sections directly. The experimental results of 174,176Yb, 184,186W, 190,192Os, 196,198Pt, and 202Hg were extrapolated from kT = 25 keV to lower and higher temperatures.

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