Abstract
x-ray spectra of metallic vanadium and its compounds (, , , VC, VN, , , and ) induced in thick targets by proton beams were measured by using wavelength dispersive (WD) x-ray spectrometer. In addition to the main x-ray line, “satellites” or second order contributions like , , , and were clearly resolved. Intensities and positions of these lines relative to the x-ray line have been extracted by fitting the spectra and corrected for x-ray sample self-absorption. The influence of the oxidation states and vanadium-ligand bond distances in studied compounds on relative intensities and positions of , , and x-ray lines (relative to ) has been studied and discussed. The obtained results indicate that the strength of the and transition probability per vanadium-ligand pair decreases exponentially with increasing vanadium-ligand distance, in agreement with the observation reported by Bergman et al. for relative intensity in a number of Mn oxide compounds [U. Bergmann, C. R. Horne, T. J. Collins, J. M. Workman, and S. P. Cramer, Chem. Phys. Letters 302, 119 (1999)].
2 More- Received 21 July 2006
DOI:https://doi.org/10.1103/PhysRevA.74.062501
©2006 American Physical Society