Abstract
The fluctuations of uranium X-rays yield in coincidence with fission of the235U nucleus were observed at several neutron resonances. The results show the dependence ofK α1 yield on fission widthΓ f. This dependence is explained by the (n, γf) process which is the result of competition between fission and γ-decay during the deexcitation of the236U compound nucleus. The mean width 〈Γ f〉 was determined to be equal to (2·1 +1·5−1·7 ) meV. The mean energy of prefissionγ-rays was found to be (750 +400−130 ) keV. It seems that the γ-transitions taking place before fission of the236U compound nucleus are mostly of the magnetic dipole.
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It is a great pleasure to express our gratitude to Yu. I. Kolgin for considerable help in all the experimental work, to L. B. Pikelner and Yu. P. Popov for many useful discussions, I. M. Salamatin, A. Mateeva for the programme supply of the experiment, to A. A. Bogdzel and V. G. Tishin for taking part in different steps of the work.
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Dlouhý, Z., Duka-Zólyomi, Á., Krištiak, J. et al. Investigation of the (n, γf) process on a235U nucleus. Czech J Phys 30, 1101–1114 (1980). https://doi.org/10.1007/BF01604471
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DOI: https://doi.org/10.1007/BF01604471