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High‐resolution measurements of the K x‐ray spectra of metallic Ca, Ti, Cr, and Fe were performed with a von Hamos Bragg crystal spectrometer. The target x‐ray emission was induced by by 2–19 MeV/amu C, O and Ne ions. The energies of the well resolved KαLN X‐ray satellite lines were determined. Based on the measured values the empirical formula for the KαLN satellite energy shift of the 3d transition elements is given. For the Ca and Ti target bombarded with C ions also the KαhLN hypersatellite lines the KβLN satellite lines and even the KβhLN hypersatellite lines have been measured and their energies determined. The possible variation of the energy differences between neighboring satellite and hypersatellite lines with the projectile energy and atomic number was probed. No significant dependence on the projectile characteristics was observed. In contrast to that the absolute energies of the satellite and hypersatellite lines lines were found to depend on the projectile velocity. This dependence was attri...

High‐resolution measurements of the L1‐M4,5 fluorescence x‐ray lines of Sm, Ho, Yb, W, Pt, Hg and Bi were performed, using a transmission DuMond‐type and a reflection von Hamos‐type bent crystal spectrometer. Despite the poor intensity of the dipole‐forbidden transitions, precise linewidths were obtained. Assuming for the M4,5 level widths the values reported recently by Campbell and Papp, the L1 level widths of the investigated elements could be determined with a precision of 4–10%. A good agreement with Campbell and Papp’s data was observed for the heaviest elements. For Sm and Ho, however, an intriguing discrepancy was found. The latter was explained by a splitting effect of the L1 subshell resulting from the coupling of the 2s electron spin in the initial excited state with the total spin of the open 4f level. Based on this splitting picture, adjustements of the L1 level widths recommended by Campbell and Papp were proposed for the lanthanides region.

The Kα hypersatellite X-ray spectrum of 42Mo target bombarded with 17 MeV/u 16O ions was measured with a high-resolution transmission bent crystal spectrometer. Well resolved lines of L-satellites and K-hypersatellites of Kα1 and Kα2 transitions were observed. Such data give valuable and rich information for testing the approximation used for the description of the multielectron system. The Khα1 hypersatellite, treated as spin-flip 1S0→3P1 transition, is forbidden in pure L-S coupling. In that case the relative yields of the Kα hypersatellites reflect directly the degree of intermediate coupling in the atom. Moreover, energies of the Khα1.2L0,1 transitions and the I(Khα1L0,1)/I(Khα2L0,1) intensity ratios are much more influenced by the Breit interaction than the diagram lines. The discussion of these problems is illustrated with the measured Kα hypersatellite spectrum of 42Mo.

An in‐beam curved crystal facility has been installed at the SIN variable energy cyclotron. Using the (110) planes of a 3.0 mm thick quartz lamina bent at 3.15 m, diffraction peaks typically 6 arcsec wide (FWHM) are obtained. The energy resolution is thus, for instance, 110 eV at 170 keV in 3rd order. Due to a sophisticated detector system and heavy shielding, the sensitivity of the instrument is quite good. The facility proves quite useful in (p,xnγ) reaction studies whenever the γ‐ray spectrum is very complex, e.g. in the study of odd‐odd deformed nuclei. Complicated multiplets appearing in the 176Yb(p,3nγ)174Lu spectrum could be successfully resolved. From the results we derive that the g‐factors of the 142 d, Jπ=6− isomer, take anomalous values.