Half-life and internal conversion electron measurements in low-lying levels of 125,127Ba

M. Shibata,1, H. Iimura, M. Asai, A. Osa, K. Kawade, S. Ichikawa, M. Oshima, T. Sekine, N. Shinohara

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Abstract

The level properties in the low energy region of 125,127Ba were studied through the decays of 125,127La by using the JAERI on-line mass separator (JAERI-ISOL). The half-lives of the excited states and the internal conversion coefficients were determined for the first time by the β-γ delayed coincidence technique and by conversion electron measurements, respectively. The half-life of the long-lived isomeric state of 127Ba (1.93 s) was determined by spectrum multiscaling measurements. Although the detailed decay schemes have been proposed, no evidence of a parity doublet has been observed. The level properties with respect to the transition probabilities are well interpreted by the Nilsson model.

Original languageEnglish
Article number024305
Pages (from-to)243051-243058
Number of pages8
JournalPhysical Review C - Nuclear Physics
Volume65
Issue number2
DOIs
Publication statusPublished - Feb 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Shibata,1, M., Iimura, H., Asai, M., Osa, A., Kawade, K., Ichikawa, S., Oshima, M., Sekine, T., & Shinohara, N. (2002). Half-life and internal conversion electron measurements in low-lying levels of 125,127Ba. Physical Review C - Nuclear Physics, 65(2), 243051-243058. [024305]. https://doi.org/10.1103/PhysRevC.65.024305