Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2005-11-22
Phys.Rev.C72:065804,2005
Physics
Nuclear Physics
Nuclear Experiment
To be published in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.72.065804
The $^{32}$Cl(p,$\gamma$)$^{33}$Ar reaction rate is of potential importance in the rp-process powering type I X-ray bursts. Recently Clement et al. \cite{CBB04} presented new data on excitation energies for low lying proton unbound states in $^{33}$Ar obtained with a new method developed at the National Superconducting Cyclotron Laboratory. We use their data, together with a direct capture model and a USD shell model calculation to derive a new reaction rate for use in astrophysical model calculations. In particular, we take into account capture on the first excited state in $^{32}$Cl, and also present a realistic estimate of the remaining uncertainties. We find that the $^{32}$Cl(p,$\gamma$)$^{33}$Ar reaction rate is dominated entirely by capture on the first excited state in $^{32}$Cl over the whole temperature range relevant in X-ray bursts. In the temperature range from 0.2 to 1 GK the rate is up to a factor of 70 larger than the previously recommended rate based on shell model calculations only. The uncertainty is now reduced from up to a factor of 1000 to a factor of 3 at 0.3-0.7 GK and a factor of 6 at 1.5 GK.
Bertulani Carlos A.
Brown Alex B.
Clement R. R. C.
Sakharuk Alexander
Schatz Hendrik
No associations
LandOfFree
New $^{32}$Cl(p,$γ$)$^{33}$Ar reaction rate for astrophysical rp-process calculations 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 New $^{32}$Cl(p,$γ$)$^{33}$Ar reaction rate for astrophysical rp-process calculations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New $^{32}$Cl(p,$γ$)$^{33}$Ar reaction rate for astrophysical rp-process calculations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-384543