Identification of new transitions and mass assignments of levels in $^{143-153}$Pr

Background: The previously reported levels assigned to Pr-151,Pr-152,Pr-153 have recently been called into question regarding their mass assignment. Purpose: We clarify the above questioned level assignments by measuring gamma transitions tagged with A and Z in an in-beam experiment in addition to the measurements from Cf-252 spontaneous fission (SF) and establish new spectroscopic information from N = 84 to N = 94 in the Pr isotopic chain. Methods: The isotopic chain Pr143-153 has been studied from the spontaneous fission of Cf-252 by using Gammasphere and also from the measurement of the prompt gamma rays in coincidence with isotopically identified fission fragments using VAMOS++ and EXOGAM at Grand Accelerateur National d'Ions Lourds (GANIL). The latter were produced using U-238 beams on a Be-9 target at energies around the Coulomb barrier. The gamma-gamma-gamma-gamma data from 252Cf (SF) and those from the GANIL in-beam A- and Z-gated spectra were combined to unambiguously assign the various transitions and levels in Pr-151,Pr-152,Pr-153 and other isotopes. Results: A band of 3 new transitions added to the known level in Pr-145, 9 new transitions in two new bands in Pr-147, 6 new transitions in a new level scheme for Pr-148, two new bands with 17 new transitions in Pr-149, and two new bands with 11 new transitions in Pr-150 were identified by using gamma-gamma-gamma and gamma-gamma-gamma-gamma coincidences and A and Z-gated gamma-gamma spectra. The transitions and levels previously assigned to Pr-151,Pr-153 have been confirmed by the (A, Z)-gated spectra. Small changes have been made to their original level schemes. The transitions previously assigned to Pr-152 are now assigned to Pr-151 on the basis of the (A, Z)-gated spectra. Two new bands with 20 new transitions in Pr-152 and one new band with 7 new transitions in Pr-153 are identified from the gamma-gamma-gamma-gamma coincidence spectra and the (A, Z)-gated spectrum. In addition, new gamma rays are also reported in Pr143-146. Conclusions: New levels of Pr-145,Pr-147-153 have been established, reliable mass assignments of the levels in Pr-151,Pr-152,Pr-153 have been given in the present work, and new transitions have been identified in Pr143-146 showing the new avenues that are opened by combining the two experimental approaches.