Abstract
A RECENT investigation by Heydenburg et al.1 of the angular distribution of α-particles from the Li7(p,α)He4 reaction for proton energies greater than 1 MeV. indicates that the asymmetry of this angular distribution may be represented by the expression: The inclusion of the last term implies the existence of f-protons in the reaction as well as p-protons. Experiments2 have been carried out earlier at energies less than 1 MeV. ; but in general the values of cos2θ have been less than 0·8 and have therefore failed to reveal a B(E) cos4θ term.
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References
Heydenburg, N. P., Hudson, C. M., Inglis, D. R., and Whitehead, W. D., Phys. Rev., 73, 241 (1948); 74, 405 (1948).
Young, V. J., Ellett, A., and Plain, G. J., Phys. Rev., 58, 498 (1940) Swartz, C. D., Rossi, H. H., Jennings, B., and Inglis, D. R., Phys. Rev., 65, 80 (1944). Rubin, S., Fowler, W. A., and Lauritsen, C. C., Phys. Rev., 71, 212 (1947).
Martin, L. H., Bower, J. C., Dunbar, D. N. F., and Hirst, F., Aust. J. Sci. Res., A, 2 (1949).
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MARTIN, L., BOWER, J., DUNBAR, D. et al. Angular Distribution of α-Particles from the Li7(p,α)He4 Reaction. Nature 164, 310 (1949). https://doi.org/10.1038/164310a0
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DOI: https://doi.org/10.1038/164310a0
