Letter | Published:

Beta Spectrum of Tritium

Naturevolume 162pages302303 (1948) | Download Citation



THE β-spectrum of tritium (1H3) is of particular interest because : (1) the relatively simple structure of the 1H3 nucleus makes it Well suited to a test of the Fermi theory of β-decay ; (2) the unusually low energy of the β-particles means that the shape of the spectrum near the upper limit is an extremely sensitive function of the rest mass of the neutrino if the Fermi theory is confirmed ; (3) a theoretical discrepancy1 exists between the half-life2 and the upper energy limit, as recently measured3 ; (4) the mass difference (1H32He3) can be accurately determined.

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  1. 1

    Konopinski, E. J., Phys. Rev., 72, 518 (1947).

  2. 2

    Novick, A., Phys. Rev., 72, 972 (1947). Goldblatt, M., et al., Phys. Rev., 72, 973 (1947).

  3. 3

    Watts, R. J., and Williams, D., Phys. Rev., 70, 640 (1946).

  4. 4

    Compton, A. H., and Allison, S. K., "X-Rays" (Macmillan, 1936).

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  1. Department of Natural Philosophy, University of Glasgow

    • S. C. CURRAN
    • , J. ANGUS
    •  & A. L. COCKCROFT


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