6.7 h Pa 234(UZ) was separated from 24 d Th 234, and sources of 2μCur and less were prepared for the six-gap β-spectrometer. The continuous β-spectrum and the conversion line spectrum were measured. Numerous γ-spectra were recorded in coincidence with β-rays, γ-rays, and conversion electrons, using a NaI scintillation spectrometer in connection with the β-spectrometer. 51 conversion lines were found and 32 γ-transitions are established. The occurrence of a delayed state, populated in about one third of all decays, with a lifetime longer than 2×10 −7 sec, is demonstrated. A decay scheme comprising 16 excited states is proposed which is consistent with the results of the combined measurements. In addition to the ground state rotational band, the scheme exhibits a band built on a level at 922 keV, which may be identified as the γ-vibrational band.