Search

X-ray scattering spectra of Cu and Ni metals have been measured using monochromatic synchrotron radiation tuned from far above to more than 10 eV below threshold. Energy conservation in the scattering process is found to be sufficient to explain the modulation of the spectral shape, neglecting momentum conservation and channel interference. At excitation energies close to and above threshold, the emission spectra map the occupied local partial density of states. For the subthreshold excitations, the high-energy flank of the inelastic scattering exhibits a Raman-type linear dispersion, and an asymmetric low-energy tail develops. For excitation far below threshold the emission spectra are proportional to a convolution of the occupied and unoccupied local partial densities of states., Original Publication:Martin Magnuson, J.-E. Rubensson, A. Föhlisch, N. Wassdahl, A. Nilsson and N. Mårtensson, X-ray fluorescence spectra of metals excited below threshold, 2003, Physical Review B. Condensed Matter and Materials Physics, (68), 045119.http://dx.doi.org/10.1103/PhysRevB.68.045119Copyright: American Physical Societyhttp://www.aps.org

X-ray scattering spectra of Cu and Ni metals have been measured using monochromatic synchrotron radiation tuned from far above to more than 10 eV below threshold. Energy conservation in the scattering process is found to be sufficient to explain the modulation of the spectral shape, neglecting momentum conservation and channel interference. At excitation energies close to and above threshold, the emission spectra map the occupied local partial density of states. For the subthreshold excitations, the high-energy flank of the inelastic scattering exhibits a Raman-type linear dispersion, and an asymmetric low-energy tail develops. For excitation far below threshold the emission spectra are proportional to a convolution of the occupied and unoccupied local partial densities of states., Original Publication:Martin Magnuson, J.-E. Rubensson, A. Föhlisch, N. Wassdahl, A. Nilsson and N. Mårtensson, X-ray fluorescence spectra of metals excited below threshold, 2003, Physical Review B. Condensed Matter and Materials Physics, (68), 045119.http://dx.doi.org/10.1103/PhysRevB.68.045119Copyright: American Physical Societyhttp://www.aps.org

X-ray scattering spectra of Cu and Ni metals have been measured using monochromatic synchrotron radiation tuned from far above to more than 10 eV below threshold. Energy conservation in the scattering process is found to be sufficient to explain the modulation of the spectral shape, neglecting momentum conservation and channel interference. At excitation energies close to and above threshold, the emission spectra map the occupied local partial density of states. For the subthreshold excitations, the high-energy flank of the inelastic scattering exhibits a Raman-type linear dispersion, and an asymmetric low-energy tail develops. For excitation far below threshold the emission spectra are proportional to a convolution of the occupied and unoccupied local partial densities of states., Original Publication:Martin Magnuson, J.-E. Rubensson, A. Föhlisch, N. Wassdahl, A. Nilsson and N. Mårtensson, X-ray fluorescence spectra of metals excited below threshold, 2003, Physical Review B. Condensed Matter and Materials Physics, (68), 045119.http://dx.doi.org/10.1103/PhysRevB.68.045119Copyright: American Physical Societyhttp://www.aps.org

X-ray scattering spectra of Cu and Ni metals have been measured using monochromatic synchrotron radiation tuned from far above to more than 10 eV below threshold. Energy conservation in the scattering process is found to be sufficient to explain the modulation of the spectral shape, neglecting momentum conservation and channel interference. At excitation energies close to and above threshold, the emission spectra map the occupied local partial density of states. For the subthreshold excitations, the high-energy flank of the inelastic scattering exhibits a Raman-type linear dispersion, and an asymmetric low-energy tail develops. For excitation far below threshold the emission spectra are proportional to a convolution of the occupied and unoccupied local partial densities of states., Original Publication:Martin Magnuson, J.-E. Rubensson, A. Föhlisch, N. Wassdahl, A. Nilsson and N. Mårtensson, X-ray fluorescence spectra of metals excited below threshold, 2003, Physical Review B. Condensed Matter and Materials Physics, (68), 045119.http://dx.doi.org/10.1103/PhysRevB.68.045119Copyright: American Physical Societyhttp://www.aps.org

X-ray scattering spectra of Cu and Ni metals have been measured using monochromatic synchrotron radiation tuned from far above to more than 10 eV below threshold. Energy conservation in the scattering process is found to be sufficient to explain the modulation of the spectral shape, neglecting momentum conservation and channel interference. At excitation energies close to and above threshold, the emission spectra map the occupied local partial density of states. For the subthreshold excitations, the high-energy flank of the inelastic scattering exhibits a Raman-type linear dispersion, and an asymmetric low-energy tail develops. For excitation far below threshold the emission spectra are proportional to a convolution of the occupied and unoccupied local partial densities of states., Original Publication:Martin Magnuson, J.-E. Rubensson, A. Föhlisch, N. Wassdahl, A. Nilsson and N. Mårtensson, X-ray fluorescence spectra of metals excited below threshold, 2003, Physical Review B. Condensed Matter and Materials Physics, (68), 045119.http://dx.doi.org/10.1103/PhysRevB.68.045119Copyright: American Physical Societyhttp://www.aps.org

Resonant soft X-ray emission spectra have been measured at the Ni 2p edge of a planar nickel complex K2Ni(CN)4·H2O and interpreted by performing ab initio configuration interaction calculations. This cyano complex shows characteristic metal-to-ligand charge transfer (MLCT) bands in the Ni 2p photoabsorption spectra. Resonant soft X-ray emission via the MLCT intermediate states can be interpreted as valence MLCT excitations within a one-electron picture. On the other hand, resonant soft X-ray emission via the intra-atomic Ni 2p–3d intermediate state corresponding to the white line excitation shows significant electron correlation effects.

We show evidence of dissociation during resonant inelastic soft x-ray scattering. Carbon and oxygen K-shell and sulfur L-shell resonant and nonresonant x-ray emission spectra were measured using monochromatic synchrotron radiation for excitation and ionization. After sulfur L2,3→π*, σ* excitation, atomic lines are observed in the emission spectra as a consequence of competition between de-excitation and dissociation. In contrast the carbon and oxygen spectra show weaker line-shape variations and no atomic lines. The spectra are compared to results from ab initio calculations. The discussion of the dissociation paths is based on calculated potential energy surfaces and atomic transition energies., Original Publication: Martin Magnuson, J. Guo, C. Såthe, J.-E. Rubensson, J. Nordgren, P. Glans, L. Yang, P. Sałek and H. Ågren, Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering, 1999, Physical Review A. Atomic, Molecular, and Optical Physics, (59), 4281-4287. http://dx.doi.org/10.1103/PhysRevA.59.4281 Copyright: American Physical Society http://www.aps.org

We show evidence of dissociation during resonant inelastic soft x-ray scattering. Carbon and oxygen K-shell and sulfur L-shell resonant and nonresonant x-ray emission spectra were measured using monochromatic synchrotron radiation for excitation and ionization. After sulfur L2,3→π*, σ* excitation, atomic lines are observed in the emission spectra as a consequence of competition between de-excitation and dissociation. In contrast the carbon and oxygen spectra show weaker line-shape variations and no atomic lines. The spectra are compared to results from ab initio calculations. The discussion of the dissociation paths is based on calculated potential energy surfaces and atomic transition energies., Original Publication: Martin Magnuson, J. Guo, C. Såthe, J.-E. Rubensson, J. Nordgren, P. Glans, L. Yang, P. Sałek and H. Ågren, Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering, 1999, Physical Review A. Atomic, Molecular, and Optical Physics, (59), 4281-4287. http://dx.doi.org/10.1103/PhysRevA.59.4281 Copyright: American Physical Society http://www.aps.org

We show evidence of dissociation during resonant inelastic soft x-ray scattering. Carbon and oxygen K-shell and sulfur L-shell resonant and nonresonant x-ray emission spectra were measured using monochromatic synchrotron radiation for excitation and ionization. After sulfur L2,3→π*, σ* excitation, atomic lines are observed in the emission spectra as a consequence of competition between de-excitation and dissociation. In contrast the carbon and oxygen spectra show weaker line-shape variations and no atomic lines. The spectra are compared to results from ab initio calculations. The discussion of the dissociation paths is based on calculated potential energy surfaces and atomic transition energies., Original Publication: Martin Magnuson, J. Guo, C. Såthe, J.-E. Rubensson, J. Nordgren, P. Glans, L. Yang, P. Sałek and H. Ågren, Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering, 1999, Physical Review A. Atomic, Molecular, and Optical Physics, (59), 4281-4287. http://dx.doi.org/10.1103/PhysRevA.59.4281 Copyright: American Physical Society http://www.aps.org

We show evidence of dissociation during resonant inelastic soft x-ray scattering. Carbon and oxygen K-shell and sulfur L-shell resonant and nonresonant x-ray emission spectra were measured using monochromatic synchrotron radiation for excitation and ionization. After sulfur L2,3→π*, σ* excitation, atomic lines are observed in the emission spectra as a consequence of competition between de-excitation and dissociation. In contrast the carbon and oxygen spectra show weaker line-shape variations and no atomic lines. The spectra are compared to results from ab initio calculations. The discussion of the dissociation paths is based on calculated potential energy surfaces and atomic transition energies., Original Publication: Martin Magnuson, J. Guo, C. Såthe, J.-E. Rubensson, J. Nordgren, P. Glans, L. Yang, P. Sałek and H. Ågren, Competition between decay and dissociation of core-excited carbonyl sulfide studied by x-ray scattering, 1999, Physical Review A. Atomic, Molecular, and Optical Physics, (59), 4281-4287. http://dx.doi.org/10.1103/PhysRevA.59.4281 Copyright: American Physical Society http://www.aps.org