Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-08-03
Phys. Rev. C 75, 035803 (2007)
Physics
Nuclear Physics
Nuclear Theory
13 pages, 3 figures
Scientific paper
10.1103/PhysRevC.75.035803
Electron captures on nuclei play an important role in the collapse of stellar core in the stages leading to a type-II supernova. Recent observations of subluminous Type II-P supernovae (e.g. 2005cs, 2003gd, 1999br) were able to rekindle the interest in 8 - 10 which develop O+Ne+Mg cores. We used the proton-neutron quasiparticle random phase approximation (pn-QRPA) theory to calculate the B(GT) strength for 24Mg \rightarrow 24Na and its associated electron capture rates for incorporation in simulation calculations. The calculated rates, in this letter, have differences with the earlier reported shell model and Fuller, Fowler, Newman (hereafter F2N) rates. We compared Gamow-Teller strength distribution functions and found fairly good agreement with experiment and shell model. However, the GT centroid and the total GT strength, which are useful in the calculation of electron capture rates in the core of massive pre-supernova stars, lead to the enhancement of our rate up to a factor of four compared to the shell model rates at high temperatures and densities.
Nabi Jameel-Un
Rahman Muneeb-Ur
No associations
LandOfFree
Gamow-Teller transitions from 24Mg and its impact on the electron capture rates in the O + Ne + Mg cores of stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gamow-Teller transitions from 24Mg and its impact on the electron capture rates in the O + Ne + Mg cores of stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gamow-Teller transitions from 24Mg and its impact on the electron capture rates in the O + Ne + Mg cores of stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-663872