C.E. Canto

26Al production: The Allende meteorite (Chihuahua) stellar nucleosynthesis and solar models

In 1969 a meteorite fell near the small town of Allende, state of Chihuahua in the north of Mexico. Its study yielded information that changed the current understanding of the solar model. In particular traces of 26Al were found. Abundances of that isotope had been seen in the universe and were related to regions of active heavy nucleosynthesis. Its presence on the solar system was unexpected.It is now understood that cosmic rays induce nuclear reactions on materials to produce 26Al, on Earth this is well known and it is the basis of many environmental studies, so it is not only the product of some high metalicity star collapse.Taking advantage of the recently reinforced laboratory infrastructure of the Instituto de Fisica, at UNAM in Mexico City, we proposed to measure the cross section for 26Al production via some of the most likely reactions, from the nuclear physics point of view (highest Q-values).In this paper the study of the 28Si(d,α)26 Al nuclear reaction is shown.A target is prepared by a mixtur...