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Neutral tellurium detected
in three metal-poor stars enriched by products of r-process nucleosynthesis by
using near-ultraviolet spectra obtained with the Space Telescope Imaging
Spectrograph on board the Hubble Space Telescope. Tellurium (Te, Z=52) was
found at the second r-process peak (A≈130) associated with N=82 neutron shell
closure. The beta decay rates of unstable isotopes may be drastically
changed under stellar conditions. In this work, we have been investigated the
first forbidden (|∆J|=0, 1 and 2) transitions strength of some neutron rich
Tellurium isotopes. The theoretical framework is based on a proton neutron
quasiparticle random phase approximation (pn-QRPA) in the particle-hole (ph)
channel. The transition probabilities in the Woods-Saxon potential basis have
been calculated within the x-approximation.
The calculated first forbidden b-decay logft values
are in better agreement with experimental data.
Primary Language | English |
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Journal Section | Makaleler |
Authors | |
Publication Date | March 28, 2019 |
Submission Date | December 4, 2018 |
Acceptance Date | December 22, 2018 |
Published in Issue | Year 2019 NSP2018 Special Issue |