The “Neutrino”


THE view has recently been put forward1 that a neutral particle of about electronic mass, and spin ½h (where h = h/2) exists, and that this neutrino is emitted together with an electron in decay. This assumption allows the conservation laws for energy and angular momentum to hold in nuclear physics2, Both the emitted electron and neutrino could be described either (a) as having existed before in the nucleus or (b) as being created at the time of emission. In a recent paper3 Fermi has proposed a model of disintegration using (b) which seems to be confirmed by experiment.

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  1. 1

    W. Pauli, quoted repeatedly since 1931, to be published shortly in "Rapports du Septième Conseil Solvay, Brussels", 1933.

  2. 2

    C. D. Ellis and N. F. Mott, Proc. Roy. Soc., A, 141, 502; 1933.

  3. 3

    E. Fermi, La Ricefca Scientifica, 2, No. 12; 1933.

  4. 4

    This point of view was first put forward by I. Curie and F. Joliot, at the Conseil Solvay, 1933.

  5. 5

    I. Curie and F. Joliot, NATURE, 133, 201, Feb. 10, 1934.

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