Study ofAl27(n, p)Mg27at 14 Mev

Abstract

Protons emerging from aluminum foil bombarded by D+T neutrons have been studied with 400 μ emulsions recording over a continuous range of angles from 15° to 165°. Groups in the composite energy spectrum correspond to known ${\mathrm{Mg}}^{27}$ levels at 1.0 and 3.5 Mev and suggest additional ones at 1.6, 5.7, and 7.0 Mev. The nuclear "temperature" for the continuous portion of the spectrum is 1.2 Mev. The following cross sections are tabulated: for each energy group, isotropic and anisotropic total cross sections and maximum differential cross section; for all protons over 2 Mev, differential cross sections at 30° intervals. The isotropic component greatly exceeds the forward-peaked one for each group. Total cross section for the reaction is estimated to be 79±15 millibarns.