Abstract
Using gaseous60CoI2 sources, the velocity distribution of60Ni nuclei afterβ-decay of60Co has been measured by the nuclear-resonance-fluorescence coincidence (NRFC) method. By comparison with model calculations, information is obtained on the rearrangement of electrons on the molecule as a consequence of the change of nuclear charge. In 42% of the rearrangement processes bound (NiI2)+ or (NiI)+ molecule ions are formed. In 24% the molecule is singly charged but with the bonds between Ni and its molecular partners ruptured. In 34% the charging of more than one molecular partner leads to Coulomb explosion of the molecule. The probability of finding more than one charge on the molecule is larger by a factor of 2 as compared to the probability for electron shake-off on an isolated Ni atom.
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The authors thank the Deutsche Forschungsgemeinschaft for a support of this work and the Kernforschungszentrum Karlsruhe for carrying out the service irradiation.
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Kehlenbeck, G., Ahlert, J., Wolf, F. et al. Electronic rearrangement on molecules accompanyingβ-decay investigated by nuclear resonance fluorescence. Z Physik A 311, 253–257 (1983). https://doi.org/10.1007/BF01415678
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DOI: https://doi.org/10.1007/BF01415678