Lifetime measurements and low-lying structure in 112Sn
Department of Physics and Astronomy, University of Kentucky, 40506-0055, Lexington, KY, USA
2 Department of Chemistry, University of Kentucky, 40506-0055, Lexington, KY, USA
Accepted: 18 February 2005
Published online: 9 May 2005
The low-lying structure of 112Sn has been studied. γ-ray excitation functions, ranging from 2.5 to 4.0MeV, and angular distributions at 2.9 and 3.8MeV have been measured following the (n,n′γ) reaction to characterize the decays of the excited levels. Level lifetimes have been measured with the Doppler-shift attenuation method. Low-lying 1-, (2-), 3- and, 5- states have been identified as members of the heterogeneous quadrupole-octupole quintuplet. Decay properties and excitation energies are consistent with the structure formed by the coupling of the lowest quadrupole, 21 +, and octupole, 31 -, excitations.
PACS: 21.10.Re Collective levels – / 21.10.Tg Lifetimes – / 23.20.En Angular distribution and correlation measurements – / 25.40.Fq Inelastic neutron scattering –
© Società Italiana di Fisica and Springer-Verlag, 2005