Abstract
With the aim of investigating the influence of fragment nuclear structure e.g. shell closure configuration and odd-even nature on the scission configuration, fragment angular momenta have been deduced from the radiochemically determined independent isomeric yield ratios of the fission products111Pd,131Te,133Te,134I and138Cs in252Cf spontaneous fission. The fragments' angular momenta deduced are 8.8± 1.5, 5.8 ±1.0, 6.1±1.1, 11.5±1.1 and 9.8±1.2 ħ respectively.
The angular momenta data from this work and literature have been analysed to arrive at fragments' deformations at the scission bringing out the influence of the spherical 82n and deformed 66n and 88n shells. The fragment angular momenta were also seen to be inversely correlated to their elemental yields exhibiting odd-even fluctuations. This has been explained in terms of equilibration of the collective degrees of freedom in low energy fission.
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The authors are thankful to Dr. J.R. Nix, Los Alamos, USA, for his valuable comments. They also thank Dr. P.R. Natarajan, Head, Radiochemistry Division, for his keen interest in this work and Mr. J.K. Samuel for his help regarding instrumentations.
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Datta, T., Dange, S.P., Das, S.K. et al. Influence of fission fragment nuclear structure on scission configuration in252Cf (S.F.). Z. Physik A - Atomic Nuclei 324, 81–85 (1986). https://doi.org/10.1007/BF01290758
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DOI: https://doi.org/10.1007/BF01290758