A proportional-counter scintillation-counter telescope was used to measure the energy distributions of alpha particles emitted from thin (similar 1.8 mg cm-2) separated isotope targets of 54Fe, 63Cu, 64Zn and 107Ag bombarded with neutrons of 14.8 MeV from the (D, T) reaction. The alpha particles detected were emitted over a wide angular interval (0°-110°), the weighted mean angle of emission being 55° with respect to the direction of the incident neutrons. The energy spectra have been analysed conventionally in terms of the statistical theory of nuclear reactions, and values of `nuclear temperature' T, level density parameter a and differential cross sections for the (n, α) and (n, nα) reactions are obtained. The differential cross sections are in agreement with those obtained by other methods, and are larger than those usually predicted from the statistical theory. The values of T similar 1 MeV and a similar 5 MeV-1 obtained for the residual nuclei 51Cr, 60Co and 61Ni are in agreement with comparable data; for 104Rh we obtain T = 1.2 MeV. The differential cross sections at 55° for the (n, α) and (n, nα) reactions in target nuclei 54Fe, 63Cu, 64Zn are, respectively, 54Fe 6.47 ± 0.65, 0.43 ± 0.1; 63Cu 5.65 ± 0.55, 0.65 ± 0.15; 64Zn 4.62 ± 0.45, 6.28 ± 1.0; for 107Ag(n, α)104Rh the relevant differential cross section is 0.96 ± 0.1. All cross sections are expressed in millibarns per steradian.