Particle Emission from Low Energy Proton Bombardment of TiH₂ and TiD₂

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TiH₂ and TiD₂ thick targets were bombarded with 100 to 200 keV protons. Evidence for nuclear reactions was obtained by means of a surface barrier particle detector. Proton irradiation of TiD₂ produced the following observations: α particle emission identified as (p,α) reactions from ¹¹B and ⁷Li impurities in the target at ppm concentrations; and ∼3 MeV proton and ∼1 MeV triton emission from secondary D-D reactions caused by elastic scattering of the primary proton with a target deuteron. A 3.9 MeV α particle peak measured by others was not observed.