Beta-decay of148,150,152Pr into levels of148,150,152Nd

Theβ ^?-decay of^148,150,152Pr into levels of^148,150,152Nd has been studied byγ-singles,γγ-coincidence and for¹⁴⁸Pr also byγγ-angular correlation measurements. The praseodymium activities have been obtained by thermal neutron-induced fission of²³⁵U followed by on-line mass separation with the helium-jet coupled mass separator HELIOS. Decay schemes for these heaviest praseodymium nuclides are proposed. From the angular correlation measurements spin values for the seven lowest levels of¹⁴⁸Nd are deduced. Spin and parity assignments for the lower levels in^150,152Nd have been extrapolated from level systematics.