New estimate for the time-dependent thermal nucleosynthesis of ${}^{180}$Ta${}^m$

Abstract

We have made a new time-dependent calculation of the supernova production ratio of the long-lived isomeric state of ${}^{180}$Ta. Such a time-dependent solution is crucial for understanding the production and survival of this isotope. We include the explicit linking between the isomer and all known excited states.We have also calculated the properties of possible links to a conjectured excited state that might decrease the final isomer residual ratio. We find that the explicit time evolution of the synthesis of ${}^{180}$Ta using the available nuclear data avoids the overproduction relative to ${}^{138}$La for a $\nu$-process neutrino temperature of 4 MeV.

Published in Phys. Rev. C, 13 pages, 4 figures

References in corpus (3)

• Supernova Neutrino Nucleosynthesis of Light Elements with Neutrino Oscillations
• Survival of Nature's Rarest Isotope 180Ta under Stellar Conditions
• 138La-138Ce-136Ce nuclear cosmochronometer of supernova neutrino process

Cited by in corpus (3)

• Reanalysis of the (J = 5) state at 592 keV in 180Ta and its role in the neutrino-process nucleosynthesis of 180Ta in supernovae
• 11B and Constraints on Neutrino Oscillations and Spectra from Neutrino Nucleosynthesis
• Modification of nuclear transitions in stellar plasma by electronic processes: K-isomers in 176Lu and 180Ta under s-process conditions