Negative-Parity States inPr139

DECAY OF /sup 141m/Sm: A THREE-QUASIPARTICLE MULTIPLET IN $sup 141$Pm.

“…Also, with such a structure, there should be considerable configuration mixing with the three-particle states (cf., e.g., Ref. 37),'which would explain why the log /t's are only slightly higher than the log ft for g /e decay to the 628.6-keV state itself. Thus, we prefer the negative parity options.…”