Investigation of the K=8- isomers in N=74 isotones on beam of the Warsaw Cyclotron

The decay of the K=8- isomers in 132Ce and 134Nd have been investigated on the beam of the Warsaw Cyclotron using OSIRIS array. Reactions 120Sn(16O,4n)132Ce and 118Sn(20Ne,4n)134Nd were used. Two new decay paths have been found in the deexcitation of the 8- isomer in 132Ce. The hindrance factors for the E1, M2 and E3 transitions deexciting the isomer have been determined. Similar E3 decay of the 410 $\mu$s isomeric state in 134mNd has not been observed in our experiment but nevertheless the reduced hindrance factor f_3>=9 was determined. The decay properties of the 8- isomers in the N=74 isotones are discussed.