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- W1630772109 abstract "When including new predictions for β-delayed fission and neutron emission rates in an r-process calculation, the production ratios for 232Th/238U and 244Pu/238U are drastically lowered. Employing the chrono-metric pairs 232Th/238U 235U/238U 244Pu/238U and 129I/127I within a simple exponential model for chemical evolution of the Galaxy results in an age ranging roughly from 14 to 20×109. This is much larger than previous age determinations from actinide chronometers. Within the same model this value is consistant with predictions from the 187Re/187Os chronomet-ric pair and comparable with recent determinations of globular cluster ages and a Hubble constant of Ho < 70 km s-l Mpc-l. In more complex galactic evolution models the chronometers seem to lead to similar results, however, problems with the observed stellar age-metallicity relation are indicated." @default.
- W1630772109 created "2016-06-24" @default.
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- W1630772109 date "1984-01-01" @default.
- W1630772109 modified "2023-10-18" @default.
- W1630772109 title "Actinide R-Process Chronometers and β-Delayed Fission" @default.
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- W1630772109 doi "https://doi.org/10.1007/978-94-009-6348-1_29" @default.
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