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Astrophysically important reaction rates for novae and X-ray bursts from proton breakup at intermediate energies

Banu, A, Trache, L, Carstoiu, F, Orr, NA, Achouri, NL, Bonaccorso, A, Catford, WN, Chartier, M, Fernandez-Dominguez, B, Freer, M, Gaudefroy, L, Horoi, M, Labiche, M, Laurent, B, Lemmon, RC, Negoita, F, Paschalis, S, Patterson, N, Pietras, B, Roeder, B, Rotaru, F, Roussel-Chomaz, P, Simmons, E, Thomas, JS and Tribble, RE (2010) Astrophysically important reaction rates for novae and X-ray bursts from proton breakup at intermediate energies AIP Conference Proceedings, 1304. 339 - 343. ISSN 1551-7616

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Abstract

We discuss the use of one-nucleon removal reactions of loosely bound nuclei at intermediate energies as an indirect method in nuclear astrophysics. The breakup reactions are proved to be good spectroscopic tools and can be used to study a large number of loosely bound proton- or neutron-rich nuclei over a wide range of beam energies. As peripheral processes, they can be used to extract asymptotic normalization coefficients (ANCs) from which non-resonant capture reaction rates of astrophysical interest can be calculated parameter free. In this talk, we present results of a proton-breakup experiment carried out at GANIL (France) with a cocktail beam centered around 23Al at 50 MeV/nucleon. Momentum distributions of the breakup fragments, inclusive and in coincidence with gamma rays detected by EXOGAM Germanium clover array, were measured in the focal plan of SPEG energy-loss spectrometer. We present in particular the investigations of reaction rates for 22Mg(p,γ)23Al and 23Al(p,γ)24Si important for novae and X-ray bursts, respectively.

Item Type: Article
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Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

The following article appeared in AIP Conf. Proc. 1304, 339 (2010); doi: 10.1063/1.3527219 and may be found at http://dx.doi.org/10.1063/1.3527219

Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Symplectic Elements
Date Deposited: 15 Mar 2012 11:50
Last Modified: 23 Sep 2013 19:12
URI: http://epubs.surrey.ac.uk/id/eprint/207066

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