Measurement of the 25Mg(α,n)28Si reaction cross section at LNL
1 INFN, Sezione di Padova, Padova, Italy
2 Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy
3 INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy
4 INFN, Sezione di Milano, Milano, Italy
5 Dipartimento di Fisica, Università degli studi di Milano, Milano, Italy
a e-mail: firstname.lastname@example.org
Published online: 20 March 2014
The detection of the 1809 keV emission line associated with the decay of 26Al in the interstellar medium provides a direct evidence of recent nucleosynthesis events in our galaxy.
26Al is thought to be mainly produced in massive stars, but in order to have a quantita- tive understanding of the 26Al distribution, the cross section of all the nuclear reactions involved in its production should be accurately known.
A recent sensitivity study demonstrated that the 25Mg(α,n)28Si is the reaction with the strongest impact on the synthesis of 26Al during explosive Neon and Carbon burning . In order to improve the experimental knowledge of the 25Mg(α,n)28Si cross section, a new direct measurement has been performed at Legnaro National Laboratories.
The experimental setup, the data analysis and preliminary results are discussed.
© Owned by the authors, published by EDP Sciences, 2014