Study of the Si-28(d,alpha)Al-26 nuclear reaction at low energies
Por:
Araujo-Escalona V., Acosta L., Andrade E., Barrón-Palos L., De Lucio O., Favela F., Huerta A., Lopez E., Rita P.S., Solis C., Chávez E.
Publicada:
1 ene 2017
Categoría:
Physics and astronomy (miscellaneous)
Resumen:
Al-26 is known as a gamma-ray emitter in the universe. Since its
half-life is only 0.72 My it's the obvious evidence of ongoing
nucleosynthesis. This isotope is also known as an origin of an
abundance-anomaly of Mg-26 observed in meteorites. There is also Al-26
production on Earth due to the continuous cosmic ray bombardment.
Therefore, a precise knowledge of the production rates for Al-26 are
needed. In this paper, we present a progress report on our measurements
of the Si-28(d,alpha)Al-26 nuclear reaction. The experimental protocol
consists of three steps: i) target preparation, ii) deuteron
irradiations and iii) Al-26 off line counting using Accelerator Mass
Spectrometry (AMS). Due to accelerator failure, deuteron irradiations
had to be interrupted and the number or Al-26 produced was insufficient
to extract cross sections as expected. In step (ii), given our special
geometry requirements we ended up facing the old problem of a goat
tethered inside a circular field, which we turned into a tool to
fine-tune the beam-target alignment in the micron range. (C) 2017
Published by Elsevier B.V.
Filiaciones:
Araujo-Escalona V.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Acosta L.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Andrade E.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Barrón-Palos L.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
De Lucio O.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Favela F.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Huerta A.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Lopez E.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Rita P.S.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Solis C.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Chávez E.:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
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