出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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,g )26Si reaction which is the competition reaction for production
of 26Alg.s. is one of the important subjects to be investigated. In this work, the astrophysically
important 26Si states above the proton threshold were studied via the 28Si(4He,6He)26Si reaction.
We have preformed an angular distribution measurement using the high resolution QDD spectrograph
(PA) at Center for Nuclear Study (CNS), University of Tokyo. The experimental results
and data analysis will be presented.
