K-shell x-ray-production cross sections in 6C, 8O, 9F, 11Na, 12Mg, and 13Al, by 0.75- to 4.5-MeV protons Yu, Y. C. McNeir, M.R. Weathers, Duncan L. Duggan, Jerome L. McDaniel, Floyd Del. (Floyd Delbert), 1942- Lapicki, Gregory American Physical Society 1991-11-01 English 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 and first-order Born theoretical predictions are, in general, in close agreement with each other and both generally fit the data quite well. K-shell protons x-ray-production ionization theories Physical Review A, 1991, College Park: American Physical Society, pp. 5702-5706 Public Article 5 p. Text doi: 10.1103/PhysRevA.44.5702 http://digital.library.unt.edu/ark:/67531/metadc139500/ ark: ark:/67531/metadc139500