caa a22 4500 445872853 CHVBK 20180317145517.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1140/epja/i2011-11102-8 doi (NATIONALLICENCE)springer-10.1140/epja/i2011-11102-8 Direct and sequential radiative three-body reaction rates at low temperatures [Elektronische Daten] [E. Garrido, R. de Diego, D. Fedorov, A. Jensen] We investigate the low-temperature reaction rates for radiative capture processes of three particles. We compare direct and sequential capture mechanisms and rates using realistic phenomenological parametrizations of the corresponding photodissociation cross-sections. Energy conservation prohibits sequential capture for energies smaller than that of the intermediate two-body structure. A finite width or a finite temperature allows this capture mechanism. We study generic effects of positions and widths of two- and three-body resonances for very low temperatures. We focus on nuclear reactions relevant for astrophysics, and we illustrate with realistic estimates for the α-α-α and α-α-n radiative capture processes. The direct capture mechanism leads to reaction rates which for temperatures smaller than 0.1 GK can be several orders of magnitude larger than those of the NACRE compilation. SIF, Springer-Verlag Berlin Heidelberg, 2011 Garrido E. Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006, Madrid, Spain aut de Diego R. Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006, Madrid, Spain aut Fedorov D. Department of Physics and Astronomy, Aarhus University, DK-8000, Aarhus C, Denmark aut Jensen A. Department of Physics and Astronomy, Aarhus University, DK-8000, Aarhus C, Denmark aut The European Physical Journal A Springer-Verlag 47/8(2011-08-01), 1-14 1434-6001 47:8<1 2011 47 10050 https://doi.org/10.1140/epja/i2011-11102-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epja/i2011-11102-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Garrido E. Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006, Madrid, Spain aut NATIONALLICENCE 700 1- de Diego R. Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006, Madrid, Spain aut NATIONALLICENCE 700 1- Fedorov D. Department of Physics and Astronomy, Aarhus University, DK-8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Jensen A. Department of Physics and Astronomy, Aarhus University, DK-8000, Aarhus C, Denmark aut NATIONALLICENCE 773 0- The European Physical Journal A Springer-Verlag 47/8(2011-08-01), 1-14 1434-6001 47:8<1 2011 47 10050 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer