The 28Si(d,α) reaction

39th Symposium on Nuclear Physics 2016

Araujo-Escalona, V.^1 ; Acosta, L.^1 ; Andrade, E.^1 ; Barrón-Palos, L.^1 ; Cantó, C.^1 ; Favela, F.^1 ; Huerta, A.^1 ; Ortiz, M.E.^1 ; Solís, C.^1 ; Chávez, E.^1

Institute de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica, Ciudad Universitaria, CP. 04510, Coyoacán, Ciudad de México, Mexico^1

关键词: Allende;    Combustion temperatures;    Deuteron beams;    Environmental studies;    Experimental methods;    Experimental protocols;    Metallicities;    Natural silicon;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/730/1/012003/pdf
DOI  :  10.1088/1742-6596/730/1/012003

来源: IOP

【 摘 要 】

Recent techniques and experimental methods open up new ways to explore nuclear reactions relevant to nucleosynthesis at stellar combustion temperatures. In this work we focus on the case of26Al, isotope associated with the identification of active nucleosynthesis spots in the cosmos. Its presence in the solar system was unexpected until it was found in the Allende meteorite. It is now understood that cosmic rays induce nuclear reactions to produce26Al. On Earth, this process is well known and is the basis of many environmental studies. So26Al is not just the product of some high-metallicity star collapse. Natural Silicon targets were irradiated with deuteron beams of energies between 0.9 and 2.6 MeV. The produced26Al were counted later-on in an AMS facility. In this paper, we describe in detail the experimental protocol developed to quantify the number of deuterons hitting the target, as a first step to determine the total cross section.