¹²C+¹²C reactions at astrophysical energies: tests of targets behaviour under beam bombardment
Date
2014-05-09
Authors
Morales-Gallegos, L.
Aliotta, M.
Di Leva, A.
Gialanella, L.
Schürmann, D.
De Cesare, M.
Davinson, T.
Imbriani, G.
Romano, M.
Romoli, M.
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American Institute of Physics (AIP)
Abstract
¹²C(¹²C,α)²⁰Ne and ¹²C(¹²C,p)²³Na are the most important reactions during the carbon burning phase in stars. Direct measurements at the relevant astrophysical energy (E=1.5±0.3MeV) are very challenging because of the extremely small cross sections involved and of the high beam-induced background originating from impurities in the targets. In addition, persistent resonant structures at low energies are not well understood and make the extrapolation of the cross section from high energy data very uncertain. As a preliminary step towards the measurements of the ¹²C(¹²C,α)²⁰Ne and ¹²C(¹²C,p)²³Na reactions we intend to investigate the behaviour of targets under beam bombardment, specifically the quantitative measurement of hydrogen and deuterium content of highly pure stable carbon targets in relation to target temperature. Experiments are taking place at the CIRCE accelerator in Caserta, Italy and preliminary results are presented here.
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Direct reactions, low and intermediate energy heavy-ion reactions, nucleosynthesis in late stellar evolution, 12C
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AIP Conference Proceedings
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