Results 241 to 250 of about 40,331 (294)
Some of the next articles are maybe not open access.
Fast XANES perturbation schemes
Surface Science, 1985Abstract We investigate the applicability of renormalized forward scattering perturbation theory and single scattering approximations to the calculation of near-edge X-ray absorption spectra. We show that judicious combined use of these schemes can result in savings of computer time of almost an order of magnitude.
D.D. Vvedensky, J.B. Pendry
openaire +1 more source
AIP Conference Proceedings, 2007
The combination of spectroscopy and microscopy enables unprecedented insights into the molecular and crystal structures of organic and inorganic materials, and their interfaces. This is relevant to the field of biomaterials in general and biominerals in particular.
Rebecca A. Metzler +8 more
openaire +1 more source
The combination of spectroscopy and microscopy enables unprecedented insights into the molecular and crystal structures of organic and inorganic materials, and their interfaces. This is relevant to the field of biomaterials in general and biominerals in particular.
Rebecca A. Metzler +8 more
openaire +1 more source
Physica B: Condensed Matter, 1995
Abstract X-ray-absorption near edge structure (XANES) poses many theoretical challenges and a general quantitative theory remains elusive. We have studied structural contributions to XANES based on high-order multiple-scattering (MS) calculations, including X-ray polarization. Ab initio MS calculations of XANES are presented using a code FEFF6X, that
J.J. Rehr +3 more
openaire +1 more source
Abstract X-ray-absorption near edge structure (XANES) poses many theoretical challenges and a general quantitative theory remains elusive. We have studied structural contributions to XANES based on high-order multiple-scattering (MS) calculations, including X-ray polarization. Ab initio MS calculations of XANES are presented using a code FEFF6X, that
J.J. Rehr +3 more
openaire +1 more source
1988
In this short review of recent advances in XANES we have discussed the use of this spectroscopy to probe the geometry of local structure via multiple scattering effects in the real space and and the local partial unoccupied density of states in metals via the band structure approach.
Antonio Bianconi, J. Garcia, M. Benfatto
openaire +1 more source
In this short review of recent advances in XANES we have discussed the use of this spectroscopy to probe the geometry of local structure via multiple scattering effects in the real space and and the local partial unoccupied density of states in metals via the band structure approach.
Antonio Bianconi, J. Garcia, M. Benfatto
openaire +1 more source
Ultrafast Phenomena and Nanophotonics XXV, 2021
Attosecond soft X-ray pulses across the oxygen edge at 543 eV are a powerful means for X-ray absorption spectroscopy. I will show how the combination of attosecond temporal resolution with the soft X-ray’s element and state specificity provides unprecedented insight into the electronic and nuclear dynamics in real time.
openaire +1 more source
Attosecond soft X-ray pulses across the oxygen edge at 543 eV are a powerful means for X-ray absorption spectroscopy. I will show how the combination of attosecond temporal resolution with the soft X-ray’s element and state specificity provides unprecedented insight into the electronic and nuclear dynamics in real time.
openaire +1 more source
Application of XANES in gamma dosimetry
Applied Radiation and Isotopes, 2019The thermoluminescence material, CaSO4:Dy, is widely used for the dosimetry of ionizing radiation due to its high sensitivity, low fading and wide dose range from μGy to few tens of gray. However, its application is limited at high doses due to non-linear and saturation effects. In this paper, X-ray Absorption Near Edge Structure (XANES) studies at the
P K, Sahani +4 more
openaire +2 more sources
1984
SbSI and Sb2S3, representative compounds of the AVBVICVII and A V 2 B VI 3 groups respectively, have awakened a remarkable interest for their physical and mechanical properties related to the low dimensional structure.
Dalba, Giuseppe +2 more
openaire +2 more sources
SbSI and Sb2S3, representative compounds of the AVBVICVII and A V 2 B VI 3 groups respectively, have awakened a remarkable interest for their physical and mechanical properties related to the low dimensional structure.
Dalba, Giuseppe +2 more
openaire +2 more sources
EXAFS / XANES - Röntgenabsorptionsspektroskopie
2017Rontgenabsorptionsspektren zeigen auf einem stetig abfallenden Untergrund bei elementspezifischen Energien Stufen, an denen der Absorptionskoeffizient abrupt ansteigt. Ursache hierfur ist, dass nur Rontgenphotonen mit einer Energie, die hoher ist als die Bindungsenergie eines Elektrons, absorbiert werden konnen.
Jürgen Bauch, Rüdiger Rosenkranz
openaire +1 more source