Determination of the Galaxy age by the method of uranium–thorium–plutonium isotopic ratios

Panov, I. V. and Lutostansky, Yu. S. and Eichler, M. and Thielemann, F.-K.. (2017) Determination of the Galaxy age by the method of uranium–thorium–plutonium isotopic ratios. Physics of Atomic Nuclei / Yadernaya Fizika, 80 (4). pp. 657-665.

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The dependence of the Galaxy age (D cent (G)), as determined by the method of uranium-thorium isotopic ratios, on the parameters of the nucleosynthesis model is studied within the theory of galactic nucleosynthesis. It is shown that D cent G depends strongly both on the scenario of the production of nuclei in the r-process and those features of neutron-rich nuclei that are used in the respective analysis and on galactic-nucleosynthesis parameters. The effect of a sudden nucleosynthesis spike before the formation of a solar system on the Galaxy age is evaluated. The region of admissible values of the parameters of galacticnucleosynthesis theory is discussed. The method of uranium-thorium isotopic ratios is supplemented with the Pu-244/U-238 ratio for yet another cosmochronometer pair, and the Galaxy age is estimated on the basis of the model modified in this way.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Thielemann, Friedrich-Karl
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:MAIK Nauka/Interperiodica with Springer
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:24 Jan 2018 11:24
Deposited On:24 Jan 2018 11:24

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