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Título: | Alternative path for bridging the A = 5, 8 gap in neutron-rich nucleosynthesis scenarios |
Autor: | Diego, Raul de CSIC ORCID; Garrido, Eduardo CSIC ORCID; Fedorov, D.V.; Jensen, A.S. | Palabras clave: | 3H-, 3He-, and 4He-induced reactions Elementary particle processes A(less-than-or-equal-to)5 Properties of nuclei nuclear energy levels Hydrostatic stellar nucleosynthesis |
Fecha de publicación: | 2010 | Editor: | Institute of Physics Publishing | Citación: | Journal of Physics G: Nuclear and Particle Physics 37 (2010) | Resumen: | In neutron-rich nucleosynthesis scenarios the mass gaps A = 5, 8 are assumed to be bridged by the three-body electromagnetic recombination reaction 4He(αn, γ )9Be. However, an alternative path, the nuclear four-body neutronrecoil recombination reaction 4He(αnn, n)9Be, is also conceivable in neutronrich environments. We estimate the rate of the alternative reaction and show that for temperatures of about 109 K it is comparable with the electromagnetic rate if the neutron density is of about 1030 neutrons per cm3. At higher neutron densities the nuclear process dominates. © 2010 IOP Publishing Ltd. | URI: | http://hdl.handle.net/10261/89510 | DOI: | 10.1088/0954-3899/37/11/115105 | Identificadores: | doi: 10.1088/0954-3899/37/11/115105 issn: 0954-3899 |
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