Abstract
RECENT experimental work has proved the existence of selective absorption for neutrons the kinetic energy of which amounts to a few volts by certain nuclei1–5. Bohr6 assumes that in these cases the kinetic energy of the captured neutron is equal to the difference between the energy of a level of the newly-formed nucleus and the mass defect for a neutron with zero velocity. This provides an ideal compensation method for the determination of the distance7, breadth5,7 and form of nuclear levels. The total energy of the level, which amounts in all these cases to some millions of volts, does not interfere with the determinations in question, since only the kinetic energy of the absorbed neutrons is measured.
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PREISWERK, P., VON HALBAN, H. The Form of Nuclear Levels. Nature 138, 163 (1936). https://doi.org/10.1038/138163a0
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DOI: https://doi.org/10.1038/138163a0
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