/sup 176/Lu: Cosmic clock and stellar thermometer
Journal Article
·
· Astrophys. J.; (United States)
The s-process nucleosynthesis of the isobar pair /sup 176/Lu//sup 176/Hf, a long-lived cosmic clock, is examined in conjunction with the s-only isotopes /sup 148,150/Sm, /sup 154/Gd, /sup 160/Dy, /sup 170/Yb, /sup 186/Os, and /sup 192/Pt. Expressions are derived which allow us to calculate the s-process age from measured quantities alone. A formula is specified which does not contain the population probability P to the 3.68 hr isometric state in /sup 176/Lu. This allows us to decide if /sup 176/Lu is, in addition to a cosmic clock, also a stellar thermometer.
- Research Organization:
- Kermforschungszentrum Karlsruhe GmbH, Institut fuer Angewandte Kernphysik
- OSTI ID:
- 5503705
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 262:2; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
Similar Records
/sup 176/Lu: Cosmic clock or stellar thermometer
Neutron capture cross sections on /sup 138/Ba, /sup 140,142/Ce, /sup 175,176/Lu, and /sup 181/Ta at 30 keV:Prerequisite for investigation of the /sup 176/Lu cosmic clock
Neutron capture cross sections and solar abundances of /sup 160,161/Dy, /sup 170,171/Yb, /sup 175,176/Lu, and /sup 176,177/Hf have been measured
Journal Article
·
Sat Aug 01 00:00:00 EDT 1981
· Astrophys. J., Suppl. Ser.; (United States)
·
OSTI ID:5974077
Neutron capture cross sections on /sup 138/Ba, /sup 140,142/Ce, /sup 175,176/Lu, and /sup 181/Ta at 30 keV:Prerequisite for investigation of the /sup 176/Lu cosmic clock
Journal Article
·
Thu Jan 31 23:00:00 EST 1980
· Phys. Rev., C; (United States)
·
OSTI ID:5754822
Neutron capture cross sections and solar abundances of /sup 160,161/Dy, /sup 170,171/Yb, /sup 175,176/Lu, and /sup 176,177/Hf have been measured
Journal Article
·
Wed Aug 01 00:00:00 EDT 1984
· Phys. Rev. C; (United States)
·
OSTI ID:6543947
Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHEMISTRY
COSMOCHEMISTRY
ELEMENTS
HAFNIUM
HAFNIUM ISOTOPES
ISOTOPES
LUTETIUM
LUTETIUM ISOTOPES
METALS
NUCLEOSYNTHESIS
RARE EARTH ISOTOPES
RARE EARTHS
S PROCESS
STAR EVOLUTION
TRANSITION ELEMENTS
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHEMISTRY
COSMOCHEMISTRY
ELEMENTS
HAFNIUM
HAFNIUM ISOTOPES
ISOTOPES
LUTETIUM
LUTETIUM ISOTOPES
METALS
NUCLEOSYNTHESIS
RARE EARTH ISOTOPES
RARE EARTHS
S PROCESS
STAR EVOLUTION
TRANSITION ELEMENTS