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Title: {sup 12}C+{sup 12}C reactions at astrophysical energies: Tests of targets behaviour under beam bombardment

{sup 12}C({sup 12}C,α){sup 20}Ne and {sup 12}C({sup 12}C,p){sup 23}Na 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 {sup 12}C({sup 12}C,α){sup 20}Ne and {sup 12}C({sup 12}C,p){sup 23}Na 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.
Authors:
 [1] ; ;  [2] ; ; ; ;  [3] ;  [4] ;  [5] ;  [6] ;  [7]
  1. SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK and INFN, Sezione di Napoli, Naples (Italy)
  2. SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh (United Kingdom)
  3. INFN, Sezione di Napoli, Naples, Italy and Dipartimento di Scienze Fisiche, Università di Napoli Federico II, Naples (Italy)
  4. INFN, Sezione di Napoli, Naples, Italy and Dipartimento di Matematica e Fisica Seconda Università degli studi di Napoli, Caserta (Italy)
  5. INFN, Sezione di Napoli, Naples (Italy)
  6. Department of Nuclear Physics, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia and INFN, Sezione di Napoli, Naples (Italy)
  7. Dipartimento di Matematica e Fisica Seconda Università degli studi di Napoli, Caserta, Italy and Ruhr-Universität Bochum, Bochum (Germany)
Publication Date:
OSTI Identifier:
22280404
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1595; Journal Issue: 1; Conference: 7. European summer school on experimental nuclear astrophysics, Santa Tecla, Sicily (Italy), 15-17 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ALPHA PARTICLES; ASTROPHYSICS; CARBON 12; CARBON 12 REACTIONS; CARBON 12 TARGET; CARBON BURNING; CROSS SECTIONS; DEUTERIUM; HYDROGEN; NEON 20; PROTONS; SODIUM 23; STARS