Eur. Phys. J. A (2005) 25: 443-445
https://doi.org/10.1140/epjad/i2005-06-042-0

ENAM 2004

Lifetime measurements and low-lying structure in ¹¹²Sn

¹ 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

Received: 22 October 2004
Accepted: 18 February 2005
Published online: 9 May 2005

Abstract

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.