Abstract
The γ- and conversion electron spectra following131Ba ε-decay are investigated, using HPGe detector and mini-orange electron spectrometer. Attention is particularly focussed on identifying weak transitions associated with low energy high spin levels in131Cs level scheme earlier inferred in reaction studies but not yet observed in131Ba decay. Our experiment identifies 15 new gammas and 6 new conversion lines in this decay. Internal conversion coefficients and multipolarities of several transitions are determined. Five new levels (3 with Iπ = 7/2+ and one each with Iπ 9/2+ and 11/2−) are introduced in the131Cs level scheme based on our observations taken together with the results from reaction studies. Spin-parity assignments to a few other levels are also suggested
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Sainath, M., Rao, D.R., Venkataramaniah, K. et al. Observation of high spin levels in131Cs from131Ba decay. Pramana - J Phys 61, 1157–1162 (2003). https://doi.org/10.1007/BF02704411
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DOI: https://doi.org/10.1007/BF02704411
Keywords
- Radioactivity
- 131Ba beta decay
- γ and ce measured HPGe
- miniorange
- internal conversion coefficient
- multipolarities
- 131Cs level scheme