Abstract
Gamma radiation following alpha decay of249Cf was investigated with high resolution Ge(Li) detectors in singles and coincidence arrangements. Nine new γ-rays were identified and placed in the previously-known decay scheme. Their energies in keV and intensities relative to the 388 keV (100) γ-ray are: 37.5±0.1 (0.026), 65.87±0.1 (0.017), 121.5±0.4 (0.070), 229.2±0.2 (0.072), 255.7±0.2 (0.065), 390.5±0.2 (0.025), 405.9±0.1 (0.014), 588.8±0.1 (0.003), and 643.5±0.1 (0.007). Coincidence measurements revealed that the intensity of the 54.7 keV γ-ray is shared by three intraband transitions and that the 121.5 keV crossover transition is present in the ground-state band.
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Supported in part by the U.S. Atomic Energy Commission.
On leave from the University of Göttingen.
We are indebted to R.D. Baybarz of the Oak Ridge Transuranium Research Laboratory for electrodepositing the249Cf source. We also thank Mr. Milton McLain of the Georgia Tech Research Reactor for the use of his 54 cm3 Ge(Li) detector. One of us (W.-D. S.-O.) wishes to thank the Deutsche Forschungsgemeinschaft for a travel grant.
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Schmidt-Ott, W.D., Fink, R.W. & Rao, P.V. Gamma radiation in the decay of249Cf. Z. Physik 245, 191–197 (1971). https://doi.org/10.1007/BF01395230
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DOI: https://doi.org/10.1007/BF01395230