The distribution in angle of long range alpha particles from fluorine bombarded by protons has been studied in the range 270 - 440 ekv. The distribution shows a very strong concentration in the forward direction. Intensity as a function of angle in the center of mass system may be represented by the equation I (Θ) = 1 + .77 CoS Θ + .17 CoS2 Θ for a bombarding energy of 375 ekv. The distribution shows little, if any, energy dependence and in particular is not observably different at 330 ekv bombarding energy. Targets were prepared by electrolyzing hydrogen fluoride on tantalum and were fairly thin, the apparent half width of the 330 ekv gamma ray line being 40 ekv or less.
Proceedings of the Iowa Academy of Science
©1940 Iowa Academy of Science, Inc.
Ellett, A.; McLean, W. B.; Young, V. J.; and Plain, G. J.
"Distribution on Angle of Alpha Particles from F19 + H1,"
Proceedings of the Iowa Academy of Science, 47(1), 287-287.
Available at: https://scholarworks.uni.edu/pias/vol47/iss1/77