Download PDF

Frontiers in NUclear STructure, Astrophysics, and Reactions: FINUSTAR, Date: 2007/09/10 - 2007/09/14, Location: Kos, Greece

Publication date: 2008-05-12
Volume: 1012 Pages: 296 - 299
ISSN: 978-0-7354-0532-5
Publisher: Springer New York LLC

AIP Conference Proceedings

Author:

Ekstrom, A
Cederakll, Joakim ; Fahlander, C ; Hjirth-Jensen, M ; Ames, F ; Butler, Peter A ; Davinson, T ; Eberth, K ; Georgiev, G ; Gorgen, A ; Gorska, M ; Habs, ; Huyse, Marc ; Ivanov, Oleg ; Iwanicki, J ; Kester, O ; Koster, U ; Marsh, Bruce A ; Reiter, P ; Scheit, H ; Schwalm, D ; Siem, S ; Stefanescu, Irina ; Tveten, GM ; Van de Walle, Jarno ; Van Duppen, Piet ; Voulot, Didier ; Warr, ; Weisshaar, D ; Wenander, Frederik ; Zielinska, M ; Demetriuo, P ; Harissopulos, SV

Keywords:

Multipole matrix elements, Shell model, Coulomb excitation, nucleai with mass number 90 to 149, Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Nuclear, Physics, multipole matrix elements, shell model, nuclei with mass number 90 to 149

Abstract:

The reduced transition probabilities between the first excited 2+ state and the 0+ ground state, B(E2;0+->2+), have been measured in 106,108,110Sn using sub-barrier Coulomb excitation in inverse kinematics at REX-ISOLDE. The results are, B(E2;0+->2+) = 0.220(22), 0.226(17), and 0.228(32) e2b2, for 110Sn, 108Sn, and 106Sn, respectively. The results for 106,108Sn are preliminary. De-excitation gamma-rays were detected by the MINIBALL Ge-array. The B(E2) reveals detailed information about the nuclear wave function. A shell model prediction based on an effective CD-Bonn interaction in the neutron(0g7/2,2s,1d,0h11/2) model space using e_(neutron,eff)=1.0 e follows the experimental values for the neutron rich Sn isotopes, but fails to reproduce the results presented here.