This dataset is from an experimental campaign to study electron and x-ray emission from sample spacecraft surfaces. A target plate was fixed in the center of a vacuum chamber and irradiated with an electron beam. Secondary electrons were measured with a retarding potential analyzer. Bremsstrahlung and characteristic x-rays were measured with an x-ray detector. The ambient magnetic field was measured with a fluxgate magnetometer. The instrument suite was mounted on a rotating arm and swept around the target plate. The electron beam was located at an angle of -45 deg from the plate normal. The instruments were swept from an angle of -30 deg to approximately 90 deg.