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., ...More

PHYSICAL REVIEW LETTERS, vol.110, no.17, 2013 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 110 Issue: 17
  • Publication Date: 2013
  • Doi Number: 10.1103/physrevlett.110.172501
  • Title of Journal : PHYSICAL REVIEW LETTERS

Abstract

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