Khouaja, A.; Villari, A. C. C.; Benjelloun, M.; Auger, G.; Baiborodin, D.; Catford, W.; Chartier, M.; Demonchy, C. E.; Dlouhy, Z.; Gillibert, A.; Giot, L.; Hirata, D.; Lepine-Szily, A.; Mittig, W.; Orr, N.; Penionzhkevich, Y.; Pitae, S.; Roussel-Chomaz, P.; Saint-Laurent, M. G. and Savajols, H.
(2005).
Reaction cross-sections and reduced strong absorption radii of nuclei in the vicinity of closed shells N=20 and N=28.
European Physical Journal A - Hadrons and Nuclei, 25(Suppl.1),
pp. 223–226.
Abstract
Energy integrated reaction cross-section measurements of around sixty neutron-rich nuclei covering the region of closed shells N = 20 and N = 28 were performed at intermediate energy (30-65 A.MeV) using direct method. In this experiment, silicon detectors were used as active targets. The reduced strong absorption radii, r02, for 19 new nuclei (27F, 27,30Ne, 33Na, 28,34-35Mg, 36-38Al, 38-40Si, 41-42P, 42-44S and 45Cl) are deduced for the first time. An additional 60 radii, also measured in this experiment, are compared to results from literature. A new quadratic parametrization is proposed for the nuclear radius as a function of the isospin in the region of closed shells N = 8 and N = 28. According to this parametrization, the skin effect is well reproduced and anomalous behaviour on the radii are observed in 23N, 29Ne, 33Na, 35Mg, 44S, 45Cl and 45Ar nuclei.
| Item Type: |
Journal Article
|
| Copyright Holders: |
2005 Societa Italiana di Fisica / Springer-Verlag |
| ISSN: |
1434-6001 |
| Academic Unit/Department: |
Science |
| Item ID: |
18160 |
| Depositing User: |
Colin Smith
|
| Date Deposited: |
09 Sep 2009 14:43 |
| Last Modified: |
02 Dec 2010 20:37 |
| URI: |
http://oro.open.ac.uk/id/eprint/18160 |
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