M-subshell ionization in near-central collisions of 20-MeV/amu carbon ions with molybdenum atoms

Abstract The Kβ spectrum of 42 Mo bombarded by 20.8 MeV/amu carbon ions was measured with high-resolution using a transmission-type bent crystal spectrometer operated in the modified DuMond slit geometry. The M-shell satellites of the Kβ 2 transition could be well resolved, whereas for the Kβ 1,3 transitions only a broadening and shift of the line centroid was observed. The composite structure of the satellite lines which consist of many components that vary in energy and strength was analyzed using theoretical energies and relative intensities obtained from multiconfiguration Dirac–Fock calculations. From the data analysis average M-shell satellite-to-diagram line yield ratios were deduced for both the Kβ 1,3 and Kβ 2 transitions. For the Kβ 2 transition for which the relative contributions of the 3s,p and 3d spectator vacancies to the observed Kβ 2 M 1 satellite yield could be determined, separated X(Kβ 2 M 1 1,2,3 ):X(Kβ 2 M 0 ) and X(Kβ 2 M 1 4,5 ):X(Kβ 2 M 0 ) yield ratios could even be extracted.