The beta-delayed proton and gamma decay of 27P for nuclear astrophysics
Simmons, E., Trache, L., Banu, A., McCleskey, M., Roeder, B., Spiridon, A., Tribble, R. E., Davinson, T., Woods, P. J., Lotay, G. J., Wallace, J., Doherty, D., & Saastamoinen, A. (2013). The beta-delayed proton and gamma decay of 27P for nuclear astrophysics. In 11th International Conference on Nucleus-Nucleus Collisions (NN2012) (Article 012152). Institute of Physics Publishing Ltd. Journal of Physics: Conference Series, 420. https://doi.org/10.1088/1742-6596/420/1/012152
Julkaistu sarjassa
Journal of Physics: Conference SeriesTekijät
Banu, A. |
Päivämäärä
2013Tekijänoikeudet
© Published under licence by IOP Publishing Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence.
The creation site of 26Al is still under debate. It is thought to be produced in
hydrogen burning and in explosive helium burning in novae and supernovae, and possibly also
in the H-burning in outer shells of red giant stars. Also, the reactions for its creation or
destruction are not completely known. When 26Al is created in novae, the reaction chain
is: 24Mg(p, γ)
25Al(β
+ν)
25Mg(p, γ)
26Al, but this chain can be by-passed by another chain,
25Al(p, γ)
26Si(p, γ)
27P and it can also be destroyed directly. The reaction 26mAl(p, γ)
27Si∗
is
another avenue to bypass the production of 26Al and it is dominated by resonant capture. We
find and study these resonances by an indirect method, through the beta-decay of 27P. A clean
and abundant source of 27P was produced for the first time and separated with MARS. A
new implantation-decay station which allows increased efficiency for low energy protons and for
high-energy gamma-rays was used. We measured gamma-rays and beta-delayed protons emitted
from states above the proton threshold in the daughter nucleus 27Si to identify and characterize
the resonances. The lifetime of 27P was also measured with accuracy under 2%.
...
Julkaisija
Institute of Physics Publishing LtdKonferenssi
International Conference on Nucleus-Nucleus CollisionsKuuluu julkaisuun
11th International Conference on Nucleus-Nucleus Collisions (NN2012)ISSN Hae Julkaisufoorumista
1742-6588Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/23897042
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