1. Decay scheme of La isomers
- Author
-
Akihiro Taniguchi, Kiyoshi Kawade, Mitsuo Koizumi, Masato Asai, Yasuaki Kojima, Michihiro Shibata, Toshiaki Sekine, and Akihiko Osa
- Subjects
Radiation ,Decay scheme ,Isotope ,Chemistry ,Cyclotron ,Analytical chemistry ,Parity (physics) ,Electron ,law.invention ,Angular correlation ,law ,Excited state ,Mixing ratio ,Atomic physics - Abstract
The β+/EC decay of 126 La produced by the 94 Mo( 36 Ar, 3pn) reaction has been studied using the on-line isotope separator connected to an AVF cyclotron. Gamma-ray singles, γ–γ angular correlation and internal conversion electron measurements were carried out. From analysis of these data, 33 new levels in 126 Ba were found and the decay scheme containing 137 γ-rays and 50 excited states was constructed. The probable spin and parity of the two β-decaying states in 126 La were found to be 4±, 5± for the high-spin isomer with a half-life of 54(2) s and 0−, 1±, 2− for the low-spin isomer with a half-life shorter than 50 s.
- Published
- 2002