The Neutron Hypothesis

@article{Iwanenko1932TheNH,
  title={The Neutron Hypothesis},
  author={D. Iwanenko},
  journal={Nature},
  year={1932},
  volume={129},
  pages={798-798}
}
DR. J. CHADWICK'S explanation1 of the mysterious beryllium radiation is very attractive to theoretical physicists. Is it not possible to admit that neutrons play also an important rôle in the building of nuclei, the nuclei electrons being all packed in α-particles or neutrons ? The lack of a theory of nuclei makes, of course, this assumption rather uncertain, but perhaps it sounds not so improbable if we remember that the nuclei electrons profoundly change their properties when entering into… 

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References

Possible Existence of a Neutron

IT has been shown by Bothe and others that beryllium when bombarded by α-particles of polonium emits a radiation of great penetrating power, which has an absorption coefficient in lead of about 0.3