ABSTRACT

This chapter deals with the ranges of the particles emitted from lithium when bombarded by protons, and reports on the results obtained when that element is bombarded by ions of the heavy isotope of hydrogen. The ranges of the particles ejected from lithium by bombardment with molecular ions of were found to be identical with those produced by protons, and in fact the molecular ion is equivalent exactly to a pair of protons each with one half of the energy corresponding to the accelerating voltage. The absorption curve for the disintegration particles produced from lithium by protons is shown to consist of three definite parts. A long range of 8.4 plus/minus 0.2 cm is found, in agreement with Cockcroft and Walton, while there are two short ranges of 1.15 plus/minus 0.2 cm, and 0.65 plus/minus 0.2 cm mean range respectively. The ratio of the number of particles in the three groups is approximately 1:1:0.5.