Investigation of light nuclei by particle capture and resonant absorption

This thesis describes measurements of properties of selected nuclear levels, which are relevant to model-descriptions (like some low-lying states of 39K and 41Sc) or to experimental procedures (like the calibration of gamma-ray detector efficiencies). These experiments often yield additional information on many other levels. The author discusses examples of proton- and deuteron-capture reactions and of γ-ray absorption experiments. The author describes experiments to determine the spins and parities of the Ex = 3.88 and 4.13 MeV levels of 39K; to determine the spins and parities of the second and third excited state of 41Sc; and a study of deuteron-capture and γ-ray resonant-absorption reactions used to investigate the Ex = 16.98 MeV, T = 3/2 level of 9Be. A new technique is described that produces γ-rays of which the energy is tuneable. (Auth.)