Chemical dependence of second-order radiative contributions in the K{beta} x-ray spectra of vanadium and its compounds
Journal Article
·
· Physical Review. A
- Rudjer Boskovic Institute, Bijenicka cesta 54, 10000 Zagreb (Croatia)
K{beta} x-ray spectra of metallic vanadium and its compounds (V{sub 2}O{sub 3}, VO{sub 2}, V{sub 2}O{sub 5}, VC, VN, VCl{sub 2}, NH{sub 4}VO{sub 3}, and VOSO{sub 4}x5H{sub 2}O) induced in thick targets by 3 MeV proton beams were measured by using wavelength dispersive (WD) x-ray spectrometer. In addition to the main K{beta}{sub 1,3} x-ray line, 'satellites' or second order contributions like K{beta}{sup '}, K{beta}{sup ''}, K{beta}{sup ''}, and K{beta}{sub 2,5} were clearly resolved. Intensities and positions of these lines relative to the K{beta}{sub 1,3} 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 K{beta}{sup ''}, K{beta}{sub 2,5}, and (K{beta}{sup ''}+K{beta}{sub 2,5}) x-ray lines (relative to K{beta}{sub 1,3}+K{beta}{sup '}) has been studied and discussed. The obtained results indicate that the strength of the K{beta}{sup ''} and K{beta}{sub 2,5} transition probability per vanadium-ligand pair decreases exponentially with increasing vanadium-ligand distance, in agreement with the observation reported by Bergman et al. for K{beta}{sup ''} 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)].
- OSTI ID:
- 20976455
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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