Ratio of neutron capture cross sections for /sup 186/Os and /sup 187/Os at 25 keV neutron energy. [Re--Os. beta. -decay clock]

Journal Article · Wed Sep 01 00:00:00 EDT 1976 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.14.1287· OSTI ID:7266689

Browne, J C; Lamaze, G P; Schroder, I G

The ratio of the neutron capture cross sections for /sup 186/Os and /sup 187/Os was measured at the 25-keV iron-filtered neutron beam facility of a 10-MW reactor. A value of 0.41 +- 0.04 was obtained. On the bases of this ratio, the age of the universe was determined via the Re--Os ..beta..-decay clock to be approximately 19 x 10/sup 9/ years. (AIP)

• Research Organization: Lawrence Livermore Laboratory, University of California, Livermore, California 94550
• OSTI ID: 7266689
• Journal Information: Phys. Rev., C; (United States), Vol. 14:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
NEUTRON REACTIONS
CAPTURE
OSMIUM 186 TARGET
OSMIUM 187 TARGET
UNIVERSE
AGE ESTIMATION
CROSS SECTIONS
DECAY
GAMMA SPECTRA
INTERMEDIATE NEUTRONS
KEV RANGE 10-100
OSMIUM 187
OSMIUM 188
BARYON REACTIONS
BARYONS
DAYS LIVING RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KEV RANGE
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
OSMIUM ISOTOPES
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
TARGETS
651825* - Nuclear Properties & Reactions
A=150-189
Experimental- Nuclear Reactions & Scattering- (-1987)
640106 - Astrophysics & Cosmology- Cosmology