scholarly journals Correlation Of Magnetic Dichroism in X-Ray Absorption and Photoelectron Emission using Ultrathin Magnetic Alloy Films

1996 ◽  
Vol 437 ◽  
Author(s):  
J.G. Tobin ◽  
K.W. Goodman ◽  
G.J. Mankey ◽  
R.F. Willis ◽  
J.D. Denlinger ◽  
...  
Keyword(s):  
Light Source ◽  
Linear Dichroism ◽  
Magnetic Alloy ◽  
Photoelectron Emission ◽  
Alloy Films ◽  
X Ray ◽  
Magnetic Dichroism ◽  
Advanced Light Source ◽  
First Results ◽  
X Ray Absorption

AbstractWe have begun a program to characterize magnetic alloy overlayers using both magnetic x-ray circular dichroism (MXCD) and magnetic x-ray linear dichroism (MXLD). This will allow a direct comparison of MXCD-absorption and MXLD-photoelectron emission. First results from the Advanced Light Source will be presented.

scholarly journals Photoelectron and X-ray Absorption Spectroscopy of Pu

2003 ◽  
Vol 802 ◽  
Author(s):  
J. G. Tobin ◽  
B. Chung ◽  
R. K. Schulze ◽  
J. D. Farr ◽  
D. K. Shuh
Keyword(s):  
Light Source ◽  
Absorption Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Future Studies ◽  
X Ray ◽  
Advanced Light Source ◽  
First Results ◽  
X Ray Absorption

ABSTRACTWe have performed Photoelectron Spectroscopy and X-Ray Absorption Spectroscopy upon highly radioactive samples of Plutonium at the Advanced Light Source in Berkeley, CA, USA. First results from alpha and delta Plutonium are reported as well as plans for future studies of actinide studies.

scholarly journals On the electronic configuration in Pu

2006 ◽  
Vol 986 ◽  
Author(s):  
J G Tobin ◽  
P Soderlind ◽  
A Landa ◽  
K T Moore ◽  
A J Schwartz ◽  
...  
Keyword(s):  
Detailed Analysis ◽  
Light Source ◽  
Absorption Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Electronic Configuration ◽  
X Ray ◽  
Sample Quality ◽  
Advanced Light Source ◽  
First Results ◽  
X Ray Absorption

AbstractX-Ray Absorption Spectroscopy (XAS) and Photoelectron Spectroscopy (PES) have been performed upon highly radioactive samples, particularly Plutonium, at the Advanced Light Source in Berkeley, CA, USA. First results from alpha and delta Plutonium are reported as well as a detailed analysis of sample quality.

Magnetic x-ray linear dichroism in the photoelectron spectroscopy of ultrathin magnetic alloy films

1996 ◽  
Vol 79 (8) ◽  
pp. 5626 ◽  
Author(s):  
J. G. Tobin ◽  
K. W. Goodman ◽  
G. J. Mankey ◽  
R. F. Willis ◽  
J. D. Denlinger ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Linear Dichroism ◽  
Magnetic Alloy ◽  
Alloy Films ◽  
X Ray

scholarly journals Use of micro X-ray absorption spectroscopy and diffraction to delineate Cr(VI) speciation in COPR

2013 ◽  
Vol 11 (3) ◽  
pp. 318-324
Keyword(s):  
Light Source ◽  
Absorption Spectroscopy ◽  
Chromium Oxide ◽  
X Ray ◽  
Ore Processing ◽  
Advanced Light Source ◽  
The Matrix ◽  
Elemental Maps ◽  
X Ray Absorption

The speciation of Cr(VI) in Cromite Ore Processing Residue was investigated by means of bulk XRD, and a combination of micro-XRF, - XAS and –XRD at the Advanced Light Source (ALS), Berkeley, CA, U.S.A.. Bulk XRD yielded one group of phases that contained explicitly Cr(VI) in their structure, Calcium Aluminum Chromium Oxide Hydrates, accounting for 60% of the total Cr(VI). Micro-analyses at ALS yielded complimentary information, confirming that hydrogarnets and hydrotalcites, two mineral groups that can host Cr(VI) in their structure by substitution, were indeed Cr(VI) sinks. Chromatite (CaCrO4) was also identified by micro- XRD, which was not possible with bulk methods due to its low content. The acquisition of micro-XRF elemental maps enabled not only the identification of Cr(VI)-binding phases, but also the understanding of their location within the matrix. This information is invaluable when designing Cr(VI) treatment, to optimize release and availability for reduction.

X-ray microscopy by phase-retrieval methods at the advanced light source

2003 ◽  
Vol 104 ◽  
pp. 557-561 ◽  
Author(s):  
M. R. Howells ◽  
H. Chapman ◽  
S. Hau-Riege ◽  
H. He ◽  
S. Marchesini ◽  
...  
Keyword(s):  
Light Source ◽  
Phase Retrieval ◽  
X Ray ◽  
Advanced Light Source

scholarly journals X-Ray Diffraction under Extreme Conditions at the Advanced Light Source

2018 ◽  
Vol 2 (1) ◽  
pp. 4 ◽  
Author(s):  
Camelia Stan ◽  
Christine Beavers ◽  
Martin Kunz ◽  
Nobumichi Tamura
Keyword(s):  
Light Source ◽  
Extreme Conditions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Advanced Light Source

scholarly journals Anisotropy of X-ray Absorption Cross Section in CeCoGe3 Single Crystal

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 544
Author(s):  
Andrei Rogalev ◽  
Fabrice Wilhelm ◽  
Elena Ovchinnikova ◽  
Aydar Enikeev ◽  
Roman Bakonin ◽  
...  
Keyword(s):  
Cross Section ◽  
Absorption Cross Section ◽  
Linear Dichroism ◽  
X Rays ◽  
Absorption Cross ◽  
X Ray ◽  
Measured Absorption ◽  
Linearly Polarized ◽  
X Ray Absorption ◽  
Absorption Edges

Absorption spectra of two orthogonal linearly polarized x-rays in a single CeCoGe3 crystal were measured at the ID12 beamline of the ESRF for the energies near the K-edges of Ge, Co and near the L23 edges of Ce. The X-ray natural linear dichroism (XNLD) was revealed in the vicinity of all the absorption edges, which indicates a splitting of electronic states in a crystalline field. Mathematical modelling in comparison with experimental data allowed the isotropic and anisotropic parts of atomic absorption cross section in CeCoGe3 to be determined near all measured absorption edges. The calculations also show that the “average” anisotropy of the cross section close to the Ge K-edge revealed in the experiment is less than the partial anisotropic contributions corresponding to Ge atoms in two different Wyckoff positions.

scholarly journals Synchrotron X-Ray Microdiffraction Studies of Electromigration in Interconnect lines at the Advanced Light Source

2009 ◽  
Author(s):  
N. Tamura ◽  
K. Chen ◽  
M. Kunz ◽  
Paul S. Ho ◽  
Ehrenfried Zschech ◽  
...  
Keyword(s):  
Light Source ◽  
X Ray ◽  
Advanced Light Source ◽  
Interconnect Lines

A single crystal, linearly polarized Fe 2p X-ray absorption study of gillespite

1998 ◽  
Vol 62 (1) ◽  
pp. 65-75 ◽  
Author(s):  
P. F. Schofield ◽  
G. van der Laan ◽  
C. M. B. Henderson ◽  
G. Cressey
Keyword(s):  
Single Crystal ◽  
Ground State ◽  
Branching Ratio ◽  
Linear Dichroism ◽  
Electronic Charge ◽  
Magic Angle ◽  
X Rays ◽  
X Ray ◽  
Peak Structure ◽  
X Ray Absorption

AbstractThe Fe 2p X-ray absorption spectra of single crystal gillespite, BaFeSi4O10, show a strong linear dichroism, i.e. a large difference in the absorption when measured with the polarization of the X-rays either parallel or perpendicular to the plane of the FeO4 group. The isotropic spectrum, obtained from measurement at the ‘magic angle’, and the polarization dependent spectra have been compared to atomic multiplet calculations and show an excellent agreement with theory. Analysis of the branching ratio, the linear dichroism, and the detailed peak structure confirms that the 5A1 level is the ground state at room temperature and pressure. The 5B2 level is sufficiently low in energy that a distortion of the electronic charge density, induced by increased pressure, may result in a 5B2 ground state.

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