학술논문
Halo effects in the low-energy scattering of 15C with heavy targets
Document Type
Author
Ovejas, J. D.; Knyazev, A.; Martel, I.; Tengblad, O.; Borge, M. J.G.; Cederkäll, J.; Keeley, N.; Rusek, K.; García-Ramos, C.; Acosta, L. A.; Arokiaraj, A. A.; Babo, M.; Cap, T.; Ceylan, N.; De Angelis, G.; Di Pietro, A.; Fernández, J. P.; Figuera, P.; Fraile, L.; Fynbo, H.; Galaviz, D.; Jensen, J. H.; Jonson, B.; Kotak, R.; Kurtukian, T.; Madurga, M.; Marquínez-Durán, G.; Munch, M.; Orduz, A. K.; Honório, R.; Pakou, A.; Pérez, T.; Peralta, L.; Perea, A.; Raabe, R.; Renaud, M.; Riisager, K.; Sánchez-Benítez, A. M.; Sánchez-Segovia, J.; Sgouros, O.; Soukeras, V.; Teubig, P.; Viñals, S.; Wolińska-Cichocka, M.; Wolski, R.; Yang, J.
Source
Acta Physica Polonica B. 51(3):731-736
Subject
Language
English
ISSN
0587-4254
Abstract
The neutron-rich carbon isotope 15C was postulated to be a halo nucleus (Sn = 1215 keV, S2n = 9395 keV) according to different high-energy experiments. If so, it would be the only halo nucleus exhibiting a "pure" s-wave structure of the ground state. At low collision energies, the effect of this halo structure should manifest as a strong absorption pattern in the angular distribution of the elastic cross section, with a total suppression of the nuclear rainbow due to the large neutron transfer and breakup probabilities, enhanced by the halo configuration. The IS619 experiment, carried out at the HIE-ISOLDE facility at CERN (Switzerland), is the first dynamical study of this nucleus at energies around the Coulomb barrier. It aims to probe the halo structure via the measurement of the elastic cross section on a high-Z 208Pb target. Preliminary results of the elastic cross section are discussed and compared to Optical Model calculations.