The gamma radiation from the interaction of 14.6-MeV neutrons with aluminum has been investigated by high-resolution germanium-detector gamma-ray spectroscopy. Cross sections for gamma lines from the {sup 27}A(n,n{prime}{gamma}), (n,p{gamma}), and (n,np{gamma}) reactions have been measured at an emission angle of 125 deg. The results are compared with previous measurements and with predictions based on the statistical theory of nuclear reactions (including direct and precompound contributions). The current results are within the range of values reported in the widely discrepant previous measurements and thus allow the resolution of these discrepancies. The relative intensities of the gamma lines analyzed in this work are in good agreement with the results of a white neutron source measurement performed by two of the authors at Los Alamos National Laboratory. The measure gamma-ray production cross sections were compared with the results of nuclear model calculations using the GNASH code. The agreement with the calculated cross sections is unsatisfactory. The results of the statistical calculations are an average {approximately}20% below the measured cross sections, and there are also some discrepancies between the calculated and measured relative intensities for the different lines from the (n,n{prime}{gamma}) reaction.
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