Polarization and Excitation Function Measurements of the Lyman and Balmer Series of Atomic Hydrogen Excited by Electron Impact

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This research represents the continuation of a set of extremely successful electron-scattering experiments in atomic hydrogen. The program uses techniques developed earlier for measurements of integral cross sections for electron-impact excitation to the H(2P) metastable state and the determination of the polarization of the subsequent Lyman-a radiation. Within this new period, the group will undertake to measure integral cross sections for excitation to the H(2S), H(3P), and H(4P) states and the polarization of the Lyman-a and Lyman-B radiation. New techniques will be developed to extract the fine structure contributions of individual angular momentum components of the n=3 and n=4 states.