Os-187(n, n') inelastic cross section at 34 keV

Details Os-187(n, n') inelastic cross section at 34 keV Os-187(n, n') inelastic cross section at 34 keV

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274..408m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 274, Nov. 1, 1983, p. 408-413.

Astronomy and Astrophysics

Astrophysics

12

Galactic Evolution, Neutron Cross Sections, Nuclear Reactions, Osmium Isotopes, Cosmology, Neutron Beams, Radioactive Decay, Rhenium Isotopes

Scientific paper

A measurement of the Os-187 inelastic neutron cross section to the 3/2(-) 9.75 keV excited state with 34 + or - 2 keV incident neutrons gives 1.5 + or - 0.2 barns. Pulsed neutron time of flight and a short anisotropic iron-aluminum filter allowed separation of the inelastic yield from the 1/2(-) ground-state elastic yield at 24 keV. The influence of the result on r-process galactic age calculations via the Re-Os decay chronometer is discussed, and the need for further theoretical calculations is emphasized.

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