Fast Neutron Capture on 180HF and 184W and the Solar Hafnium and Tungsten Abundance

Details Fast Neutron Capture on 180HF and 184W and the Solar Hafnium and Tungsten Abundance Fast Neutron Capture on 180HF and 184W and the Solar Hafnium and Tungsten Abundance

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...105..270b&link_type=abstract

Astronomy and Astrophysics, Vol.105, P. 270, 1982

Astronomy and Astrophysics

Astrophysics

12

Scientific paper

The capture cross sections of 180Hf and 184W were measured by the activation method and via direct detection of prompt gamma-rays, respectively. The Maxwellian averaged cross sections for kT = 30 keV were used to decompose the solar isotopic Hf- and W-abundances into s- and r-process contributions. Examination of the r-process contributions provided evidence that the abundances of Hf and W might be smaller than quoted in recent abundance compilations. Therefore it is proposed to reconsider the information from meteorite analyses and to perform new measurements if necessary.

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