Determination of Astrophysical Direct Capture Reaction Rate for 26Si(p,γ)27P by Extracting the Asymptotic Normalization Coefficients in the Mirror Nuclear System
MetadataShow full item record
The ^26Si(p,γ)^27P reaction is of primary interest to this study in connection with its role in the destruction of the important astrophysical observable ^26Al. Due to very limited experimental information, more experimental data are clearly needed in the calculation of the ^26Si(p,γ)^27P reaction rate at the temperature of astrophysical interest. However, the reaction rate information for ^26Si(p,γ)^27P cannot be obtained today with direct measurements. Hence, it was decided to study the ^26Si(p,γ)^27P reaction using the indirect asymptotic normalization coefficient (ANC) technique. In this method, ^26Si(p,γ)^27P can be studied by means of its mirror nuclear systems ^26Mg+n→^27Mg, and the reaction rate for the radioactive proton capture ^26Si(p,γ)^27P at stellar energies can be determined through measurements of the ANC in the mirror nuclear system ^26Mg+n→^27Mg. For this reason, ^13C(^26Mg,^26Mg)^13C and the single neutron transfer channel ^13C(^26Mg,^27Mg)^12C measurements were performed. The extracted neutron asymptotic normalization coefficient for ^27Mg was used to determine the reaction rate for ^26Si(p,γ)^27P. As a part of this dissertation, the elastic scattering of ^28Si and ^32S on ^13C experiments were also performed using the newly upgraded Oxford detector. The extracted optical parameters along with an overview of the upgrade process of the Oxford detector are presented.
Dag, Murat (2016). Determination of Astrophysical Direct Capture Reaction Rate for 26Si(p,γ)27P by Extracting the Asymptotic Normalization Coefficients in the Mirror Nuclear System. Doctoral dissertation, Texas A & M University. Available electronically from