Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-08-02
Acta Physica Polonica B, 38, 3203-3223 (2007)
Physics
Nuclear Physics
Nuclear Theory
24 pages, 5 figures
Scientific paper
Electron captures are amongst the most important weak interaction rates related to the dynamics of stellar core collapse. They play a key role in the gravitational collapse of the core of a massive star triggering the supernova explosion. Titanium isotopes are believed to have significant impact on controlling the lepton-to-baryon fraction in the late phases of evolution of core of massive stars. This work consists of the calculation of electron capture rates on titanium isotopes. The pn-QRPA theory is used to calculate electron capture rates in stellar matter. The electron capture rates are calculated over a wide range of densities (10 \leq {\rho}Ye (g cm-3) \leq 1011) and temperatures (107 \leq T (K) \leq 30 \times 109). Here we also report the differences in electron capture rates with the earlier calculations including those using large scale shell model.
Nabi Jameel-Un
Rahman Muneeb-Ur
Sajjad Muhammad
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