Abstract
A new extremely shortlived fission isomer presumably in245Bk has been detected following the bombardment of243Am with4He particles of 26 MeV. Proton bombardment of243Am gives some evidence for the excitation of two shortlived fission activities which are tentatively assigned to isomers in241,242Cm. When irradiating targets of237Np,241Am, and243Am with deuterons in the energy range from 12 to 20 MeV previously known isomers are observed. Excitation functions are given for the production of these fission isomers.
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Dedicated to Prof. Dr. H. Maier-Leibnitz on the occasion of his 60th birtholay.
The authors would like to thank Dr. E. H. Kobisk from the Oak Ridge National Laboratory for the preparation of the targets and Dipl.-Phys. J. Festag for his help in handling the radioactive material.
The authors are especially indebted to Prof. J. D. Fox for valuable discussions and to Drs. G. Sletten, S. M. Polikanov and H. C. Britt for communicating their results prior to publication.
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Repnow, R., Metag, V. & von Brentano, P. Fission isomers in Cm and Bk isotopes. Z. Physik 243, 418–430 (1971). https://doi.org/10.1007/BF01396616
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DOI: https://doi.org/10.1007/BF01396616