HAL : in2p3-00680716, version 1
 arXiv : 1203.3890
 Physical Review C 85 (2012) 064320
 Asymptotic normalization coefficients and continuum coupling in mirror nuclei
 (2012)
 Background: An asymptotic normalization coefficient (ANC) characterizes the asymptotic form of a one-nucleon overlap integral required for description of nucleon-removal reactions. Purpose: We investigate the impact of the particle continuum on proton and neutron ANCs for mirror systems from $p$- and $sd$-shell regions. Method: We use the real-energy and complex-energy continuum shell model approaches. Results: We studied the general structure of the single-particle ANCs as a function of the binding energy and orbital angular momentum. We computed ANCs in mirror nuclei for different physical situations, including capture reactions to weakly-bound and unbound states. Conclusions: We demonstrated that the single-particle ANCs exhibit generic behavior that is different for charged and neutral particles. We verified the previously proposed relation [N.K. Timofeyuk, R.C. Johnson, and A.M. Mukhamedzhanov, Phys. Rev. Lett. 91, 232501 (2003); Phys. Rev. Lett. 97, 069904(E) (2006); N. K. Timofeyuk and P. Descouvemont, Phys. Rev. C 72, 064324 (2005)] between proton and neutron mirror ANCs. We find minor modifications if the spectroscopic strength is either localized in a single state or broadly distributed. For cases when several states couple strongly to the decay channel, these modifications may reach 30%.
 équipe(s) de recherche : Théorie
 Thème(s) : Physique/Astrophysique/Astrophysique stellaire et solairePlanète et Univers/Astrophysique/Astrophysique stellaire et solairePhysique/Physique Nucléaire ExpérimentalePhysique/Physique Nucléaire Théorique
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1203.3890
 in2p3-00680716, version 1 http://hal.in2p3.fr/in2p3-00680716 oai:hal.in2p3.fr:in2p3-00680716 Contributeur : Michel Lion <> Soumis le : Mardi 20 Mars 2012, 09:03:35 Dernière modification le : Vendredi 22 Juin 2012, 09:42:14