{
    "creator": [
        "Yu, Y. C.", 
        "McNeir, M.R.", 
        "Weathers, Duncan L.", 
        "Duggan, Jerome L.", 
        "McDaniel, Floyd Del. (Floyd Delbert), 1942-", 
        "Lapicki, Gregory"
    ], 
    "date": [
        "1991-11-01"
    ], 
    "description": [
        "This article discusses K-shell x-ray-production cross sections. Abstract: K-shell x-ray-production cross sections are reported for elements with K-shell x-ray energies between 277 eV (C) and 1487 eV (Al). The x-ray measurements were made with a windowless Si(Li) detector that was calibrated for efficiency by comparing bremsstrahlung spectra from electron bombardment of thin foils of aluminum, silver, and gold with theoretically determined bremsstrahlung spectral distributions. The x-ray-production cross-section measurements are compared to first-order Born and perturbed-stationary-state with energy-loss, Coulomb deflection, and relativistic corrections (ECPSSR) ionization theories using single-hole fluorescence yields. The ECPSSR