HAL : in2p3-00671501, version 1

arXiv : 0909.4716

Code Bibliographique ADS : 2009PASA...26..237L

DOI : 10.1071/AS08045

Fiche détaillée

Récupérer au format BibTeX - EndNote - TEI - RefWorks -

The Origin of Elements Heavier than Iron in honor of the 70th birthday of Roberto Gallino 2008, Turin : Italie (2008)

New High-Precision Measurement of the Reaction Rate of the 18O(p, α)15N Reaction via THM

M. La Cognata, C. Spitaleri, A. M. Mukhamedzhanov, B. Irgaziev, R. E. Tribble, A. Banu, S. Cherubini, A. Coc1, V. Crucillà, V. Z. Goldberg, M. Gulino, G. G. Kiss, L. Lamia, L. Chengbo, J. Mrazek, R. G. Pizzone, S. M. R. Puglia, G. G. Rapisarda, S. Romano, M. L. Sergi, G. Tabacaru, L. Trache, W. Trzaska, A. Tumino

(09/2009)

The 18O(p, α)15N reaction rate has been extracted by means of the Trojan-Horse method. For the first time the contribution of the 20-keV peak has been directly evaluated, giving a value about 35% larger than previously estimated. The present approach has allowed to improve the accuracy of a factor 8.5, as it is based on the measured strength instead of educated guesses or spectroscopic measurements. The contribution of the 90-keV resonance has been determined as well, which turned out to be of negligible importance to astrophysics.

1 :	CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse

Thème(s)

:

Physique/Physique Nucléaire Expérimentale Physique/Astrophysique/Astrophysique stellaire et solaire Planète et Univers/Astrophysique/Astrophysique stellaire et solaire

Mot(s)-clé(s) : nuclear reactions – nucleosynthesis – abundances

in2p3-00671501, version 1

http://hal.in2p3.fr/in2p3-00671501

oai:hal.in2p3.fr:in2p3-00671501

Contributeur : Christine Hadrossek <>

Soumis le : Vendredi 17 Février 2012, 15:31:02

Dernière modification le : Lundi 20 Février 2012, 10:42:11