127Ce levels populated in the 4.2 s127Pr beta-decay

From new measurements, a half-live of 4.2±0.3 s has been clearly established in¹²⁷Pr. This value confirms our first result [4] and rules out other data [5]. The¹²⁷Pr activity was produced by bombarding⁹²Mo or⁹⁴Mo targets with 210 MeV⁴⁰Ca beams. The mass identification has been made using an ion-guide coupled with an on-line isotope separator. The partial level scheme proposed for¹²⁷Ce has been deduced from ß-gated ? spectra and X?- and ??-coincidences. A new band structure based on a 1/2⁺ state is established.