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D(F-18, p alpha) N-15 reaction applied to nova gamma-ray emission

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de Sereville, N. Coc, A. Angulo, Carmen [UCL] Assuncao, M. Beaumel, D. Cherubini, S. [UCL] Couder, M. [UCL] Labar, Daniel [UCL] Leleux, Pierre [UCL] Loiselet, Marc [UCL] Ninane, Alain [UCL] Ryckewaert, Guido [UCL]

(eng) The 18F(p,alpha)15O reaction is recognized to be one of the most important reactions for nova gamma-ray astronomy as it governs the early E <= 511keV gamma emission. However in the nova temperature regime, its rate remains largely uncertain due to unknown low-energy resonance strengths. We report here the measurement of the D(18F,p)19F(alpha)15N one-nucleon transfer reaction, induced by a 14 MeV 18F radioactive beam impinging on a CD2 target; outgoing protons and 15N (or alpha-particles) were detected in coincidence in two silicon strip detectors. A DWBA analysis of the data resulted in new limits to the contribution of low-energy resonances to the rate of the 18F(p,alpha)15O reaction. Comment: Rapid Communication to appear in Phys. Rev. C., 4 pages and 4 figures

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2003
Journal information "Physical Review C, Nuclear Physics" - Vol. 67, p. 052801 (2003)
Publisher American Physical Society (Maryland)
issn 0556-2813
e-issn 1089-490X
Publication status Publié
Affiliations UCL - SC/PHYS - Département de physique
UCL - MD/MINT - Département de médecine interne
Keywords Nuclear Experiment ; Astrophysics
Links
  1. J. Gómez-Gomar, Mon. Not. R. Astron. Soc., 296, 913 (1998)
  2. M. Hernanz, Astrophys. J. Lett., 526, L97 (1999)
  3. A. Coc, Astron. Astrophys., 357, 561 (2000)
  4. Graulich J.-S., Cherubini S., Coszach R., El Hajjami S., Galster W., Leleux P., Bradfield-Smith W., Davinson T., Di Pietro A., Shotter A. C., Görres J., Wiescher M., Binon F., Vanhorenbeeck J., 7.07 MeV resonant state in19Nereexamined through a new measurement of the18F(p,α)15Oreaction and18F(p,p)scattering, 10.1103/physrevc.63.011302
  5. D.W. Bardayan, Phys. Rev. Lett., 89, 262501 (2002)
  6. M. Cogneau, Nucl. Instrum. Methods Phys. Res. A, 420, 489 (1999)
  7. M.E.O. Lopez, Nucl. Phys., 51, 321 (1964)
  8. T. Davinson, Nucl. Instrum. Methods Phys. Res. A, 454, 350 (2000)
  9. D.R. Tilley, Nucl. Phys., 595, 1 (1995)
  10. I.J. Thompson, Comput. Phys. Rep., 7, 167 (1988)
  11. C.M. Perey, At. Data Nucl. Data Tables, 17, 1 (1976)
  12. J. Vernotte, Phys. Rev. C, 41, 1956 (1990)
  13. M. Wiescher, Astrophys. J., 263, 891 (1982)
  14. N. de Séréville, AIP Conf. Proc. (2002)
Bibliographic reference de Sereville, N. ; Coc, A. ; Angulo, Carmen ; Assuncao, M. ; Beaumel, D. ; et. al. D(F-18, p alpha) N-15 reaction applied to nova gamma-ray emission. In: Physical Review C, Nuclear Physics, Vol. 67, p. 052801 (2003)
Permanent URL http://hdl.handle.net/2078/31282