Abstract
We present experimental and theoretical results of an investigation into low-energy electron scattering from atoms coherently prepared in the state by laser excitation. We measured the differential cross section from the coherently prepared state (referred to as partial differential cross section) for excitations of the , , , and levels at and 36.7 eV incident electron energies and compared them with theoretical results obtained from unitarized distorted wave approximation calculations. In some cases (e.g. the excitation of and levels) there is reasonable or good agreement between theory and experiment, in other cases (e.g. the excitation of the and , levels) there are order of magnitude (or more) differences.
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