Abstract
We describe an experiment optimized to determine the transition probabilities for excitation of the first excited 2+ state in 132Sn. The large excitation energy (4.04MeV) and consequent small excitation cross-section, together with the modest beam intensity available makes this a challenging experiment. The preliminary result is B(E2;0 + → 2+) = 0.11±0.03e 2 b 2. The high efficiency and generalized nature of the setup enabled us to also measure the first 2+ state in the two-neutron nucleus 134Sn. We have determined a value of B(E2;0+ → 2 +) = 0.029±0.005e 2 b 2 which shows no sign of the asymmetry with respect to the N = 82 shell closure exhibited by the Te isotopes.
Original language | English |
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Pages (from-to) | 391-394 |
Number of pages | 4 |
Journal | European Physical Journal A |
Volume | 25 |
Issue number | SUPPL. 1 |
DOIs | |
State | Published - Sep 2005 |