TRANSITION INTENSITIES AND CONVERSION COEFFICIENTS IN Dy160

Abstract

K-conversion coefficients for gamma transitions in Dy160 have been measured and the transition multipolarities determined as follows (Eγ, αK, multipolarity): 86.7 kev, 1.5 (E2); 197 kev, 1.6 × 10−1 (E2); 216 kev, 4.0 × 10−2 (E1); 299 kev, 1.3 × 10−2 (E1); 880 kev, 3.1 × 10−3 (E2); (962 + 966) kev, 2.5 × 10−3 (E2); 1179 kev, 6.6 × 10−4 (E1); 1205 kev, 4.6 × 10−4 (E1); 1273 kev, 6.1 × 10−4 (E1); 1315 kev, 3.9 × 10−4 (E1), Relative transition intensities are compared with the predictions of the Unified Model of Bohr and Mottelson and the asymmetric rotor theory of Davydov and Filippov. Transition intensities from the 966-kev level to members of the ground state rotational band suggest the asymmetric rotor interpretation.