Coulomb Excitation of Sn-104 and the Strength of the Sn-100 Shell Closure

Guastalla G., DiJulio D. D. , Gorska M., Cederkall J., Boutachkov P., Golubev P., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.110, 2013 (SCI İndekslerine Giren Dergi) identifier identifier identifier


A measurement of the reduced transition probability for the excitation of the ground state to the first 2(+) state in Sn-104 has been performed using relativistic Coulomb excitation at GSI. Sn-104 is the lightest isotope in the Sn chain for which this quantity has been measured. The result is a key point in the discussion of the evolution of nuclear structure in the proximity of the doubly magic nucleus Sn-100. The value B(E2; 0(+) -> 2(+)) = 0.10(4) e(2)b(2) is significantly lower than earlier results for Sn-106 and heavier isotopes. The result is well reproduced by shell model predictions and therefore indicates a robust N = Z = 50 shell closure. DOI: 10.1103/PhysRevLett.110.172501