Results 41 to 50 of about 92 (70)

Sub-epsilon natural ²³⁴U/²³⁸U measurements refine the ²³⁴U half-life and U-Th geochronology. [PDF]

Sci Adv
Hu HM, Shen CC, Cheng H, Woodhead JD, Edwards RL, Zhao JX, Huang CY, Lu PY, Chien WY, Wang J, Jia X, Yokoyama Y, Cai Y, Zachariáš J.   +13 more
europepmc   +1 more source

Stellar neutron capture processes and cosmochronology

, 1999
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Radiative Capture Reaction in the Stellar Interior and and Re/Os Cosmochronology

Soryushiron Kenkyu Electronics, 1999
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The Potential of White Dwarf Cosmochronology

Publications of the Astronomical Society of the Pacific, 2001
In the light of recent significant progress on both the observational and theoretical fronts, we review the status of white dwarf stars as cosmochronometers. These objects represent the end products of stellar evolution for the vast majority of stars and, as such, can be used to constrain the ages of various populations of evolved stars in the Galaxy ...
G Fontaine, P Bergeron
exaly   +2 more sources

Nucleo-cosmochronology and chemical evolution modellings

Nuclear Physics A, 2003
Abstract In an attempt to place nucleo-cosmochronology in perspective, we revisit the 187 Re- 187 Os chronometry with the use of a schematic two-zone model of chemical evolution in the solar neighbourhood and present some exemplifying results. We then elucidate the meaning of such chronometric studies, which rely on the isotopic abundances in the ...
Kohji Takahashi
exaly   +2 more sources

Operation of the r-process and cosmochronology

Physics Reports, 1993
Abstract The rapid neutron capture process produced about half of the heavy elements in nature beyond the Fe-peak. In the past quite a number of astrophysical sites have been suggested, but none of them has yet been uniquely identified. Without assuming a particular site or model, we deduce the conditions responsible for the production of r-process ...
F -K Thielemann, K -L Kratz, J W Truran   +2 more
exaly   +2 more sources

Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology

Earth and Planetary Science Letters, 1977
On August 24, 1976 the IUGS Subcommission on Geochronology (FOOTNOTE 4) met in Sydney, Australia, during the 25th International Geological Congress. They unanimously agreed to recommend the adoption of a standard set of decay constants and isotopic abundances in isotope geology.
R.H. Steiger, E. Jäger
exaly   +2 more sources

Anomalous cosmochronology …

Nature, 1978
Stephen Moorbath, David N Schramm, Moorbath Stephen   +2 more
exaly   +2 more sources

GEO- AND COSMOCHRONOLOGY AND MISCELLANEOUS NUCLEAR TECHNIQUES

1964
Alfred J Moses
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Cosmochronology with the87Rb/87Sr isobaric pair

Astrophysics and Space Science, 1984
The long-lived cosmochronometer87Rb (T 1/2=4.8×1010 yr) is studied. As its origin is partly due tos- and partly tor-process nucleosynthesis it can provide information about the time histories of these processes. The methods of using87Rb quantitatively for a chronological analysis are described. Tentative calculations based on existing experimental data
H. Beer, G. Walter
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