26Si Excited States via One-Neutron Removal from 27Si Using Radioactive Beam
Abstract
A measurement of the p(27Si, d)26Si reaction has been performed to study levels of 26Si, with connections to the stellar 25Al(p, γ)26Si reaction rate. A beam of adioactive 27Si of energy 84.3 MeV/A was impinged on a polypropylene foil (CH2) of 180 mg/cm2 in thickness. De-excitation γ-rays were detected with a highly-segmented germanium detector array, in coincidence with the 26Si recoils. Our results are an independent measurement of states used in the energy calibration of other experiments on 26Si structure. They also suggest that the spin-parity of the Ex(26Si) = 6454 keV (Er = 940 keV) state should be 4+ instead of the previously adopted assignment of 0+.
- Publication:
-
Capture Gamma-Ray Spectroscopy and Related Topics
- Pub Date:
- March 2013
- DOI:
- 10.1142/9789814383646_0048
- Bibcode:
- 2013cgrs.conf..365C