Study of astrophysically important resonant states in 26Si by the 28Si(4He,6He)26Si reaction

The emission of 1.809 MeV gamma-ray from the first excited state of ²⁶Mg followed by betadecay of ²⁶Al in its ground state (denoted as ²⁶Alg.s.) has been identified by gamma-ray telescopes such the Compton Gamma-Ray Observatory (CGRO) [1]. To resolve controversy over the possible sources of the observational 1.809 MeV gamma-rays, one needs accurate knowledge of the production rate of ²⁶Al. The ²⁵Al(p,γ )²⁶Si reaction which is the competition …