Study of the 26Al(n,p)26Mg and 26Al(n,α)23Na reactions using the 27Al(p,p')27Al inelastic scattering reaction

6th Nuclear Physics in Astrophysics

物理学;天文学

Benamara, S.^1,2 ; De Séréville, N.^1 ; Adsley, P.^3 ; Laird, A.M.^3 ; Hammache, F.^1 ; Stefan, I.^1 ; Roussel, P.^1 ; Ancelin, S.^1 ; Assié, M.^1 ; Barton, C.^3 ; Coc, A.^4 ; Diget, C.^3 ; Deloncle, I.^4 ; Fox, S.^3 ; Guillot, J.^1 ; Hamadache, C.^4 ; Kiener, J.^4 ; Le Crom, B.^1 ; Lefebvre, L.^1 ; Lefebfre-Schuhl, A.^4 ; Marquinez Duran, G.^5 ; Mavilla, G.^1 ; Morfouace, P.^1 ; Mutschler, A.^1 ; Nsangu, C.T.^3 ; Perrot, L.^1 ; Oulebsir, N.^6 ; Sánchez-Benítez, Á.-M.^5 ; Suzuki, D.^1 ; Tatischeff, V.^4 ; Vandebrouck, M.^1

Institut de Physique Nucléaire d'Orsay, UMR8608, IN2P3-CNRS, Université Paris Sud 11, Orsay

91406, France^1

Laboratoire de Physique et Chimie Quantique, Universitè Mouloud Mammeri, Tizi-Ouzou, Algeria^2

Department of Physics, University of York, York

YO10 5DD, United Kingdom^3

CSNSM, IN2P3, CNRS, Université Paris Sud, Orsay campus

91405, France^4

Departamento de Física Aplicada, Universidad de Huelva, Huelva

E-21071, Spain^5

Laboratoire de Physique Théorique, Université Abderahmane Mira, Béjaia

06000, Algeria^6

关键词: Coincidence measurement;    Information concerning;    Massive stars;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/665/1/012018/pdf
DOI  :  10.1088/1742-6596/665/1/012018

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

26Al was the first cosmic radioactivity ever detected in the galaxy as well as one of the first extinct radioactivity observed in refractory phases of meteorites. Its nucleosynthesis in massive stars is still uncertain mainly due to the lack of nuclear information concerning the26Al(n,p)26Mg and26Al(n,α)23Na reactions. We report on a single and coincidence measurement of the27Al(p,p')27Al(p)26Mg and27Al(p,p')27Al(α)23Na reactions performed at the Orsay TANDEM facility aiming at the spectroscopy study of27Al above the neutron threshold. Fourteen states are observed for the first time within 350 keV above the26Al+n threshold.