Energy dispersive X-ray diffraction

Atzei, D. Ferri, T Sadun, C. Sangiorgio, R Caminiti, R. Structural Characterization of Complexes between Iminodiacetate Blocked on Styrene-Divinylbenzene Matrix (Chelex fOO Resin) and Fe(lll), Cr(lll), and Zn(ll) in Solid Phase by Energy-Dispersive X-ray Diffraction. J. Am. Chem. Soc. 2001,123, 2552-2558. 

Fig. 4. Direct tomographic, energy-dispersive X-ray diffraction imaging system. Suitcase enters device at left of Figure where spatial landmarks for registration purposes are measured by pre-scanner. In main housing centre-right of Figure, a primary cone-beam executes a meander scan, either of a region-of-interest or suitcase in its entirety. Illustration courtesy of GE Security, Germany.

Fig. 23. Simulated energy-dispersive X-ray diffraction imaging profile for diffraction line at 1.2nm 1.

G Harding (2005) The design of direct tomographic, energy-dispersive x-ray diffraction imaging (XDI) systems. SPIE 59230R. 

G Harding, M Newton and J Kosanetzky (1990) Energy-dispersive x-ray diffraction tomography. Phys. Med. Biol. 35, 33-41. 

Ammonium dinitramide and dinitro azetidinium dinitramide For both of these materials the pressure/temperature and reaction phase diagram have been determined using a high-temperature-high-pressure diamond anvil cell with FTIR spectroscopy, Raman spectroscopy and optical microscopy. For ammoninm dinitramide energy dispersive X-ray diffraction was also employed (Russell et al. 1996, 1997). 

J. Munn, P. Barnes, D. Hausermann, S. A. Axon and J. Klinowski, in-situ studies on the hydrothermal synthesis of zeolites using synchrotron energy-dispersive X-ray diffraction, Phase Trans., 1992, 39, 129-134. 

Most powder diffraction databases only serve angular dispersive X-ray diffraction. Energy dispersive X-ray diffraction data can be transformed into an angular dispersive equivalent that can then be used in conventional search-match software. Users of neutron diffraction data are currently limited to performing phase identification using a list of crystal structures imported into a Rietveld program. It is wise to first run samples destined for neutron diffraction sample in a powder XRD prior to confirm phase purity, and to use calculated patterns to assist in phase identification of possible undesired phases due to ancillary equipment or sample environment. 

Fig. 5. Energy dispersive x-ray diffraction pattern ofNO NOs measured at (a) 9.9 GPa, (b) 21.4 GPa and (c) 32.2 GPa and room temperature. Background has been subtracted. The energy calibration was obtained from a gold external standard diffraction pattern and the pattern has been background subtracted. The 20 used was 8.99°. The calculated d-spacings are indicated below each diffraction pattern. The calculated intensity profile for the energy-dispersive x-ray diffraction pattern at 21.4 GPa is shown in the inset, (from Ref. [79])...

Fig. 6. Pressure-volume relations for NO NOs and other molecular systems. NO NOs determined from the present energy-dispersive x-ray diffraction ( ) and that from previous angle-dispersive x-ray diffraction with refined cell parameters ( ), and that from C.S. Yoo et al. ( ) (Ref. [81]), compared with a third-order Birch-Mumaghan (—) and Vinet et al. EOS fits For O2 ( ) data, below 5.5 GPa are for fluid O2 (Ref. [123]) above 5.5 GPa for the solid (Ref. [124]). Experimental data for O2 (o) at several pressures performed from Ref. [125] are also plotted. For N2 ( ), experimentally determined EOS is from Ref [126], for N2O ( ) from Ref. [127]. Volumes for N2O4 ( ) determined in the present study is fitted by the Birch-Mumaghan equation of state (—) tentatively. Also shown are the corresponding volumes of stoichometrically equivalent assemblages of N2 + 2O2 (—) and N2O+ 3/2 O2 (—).

Fig. 3.8 An energy dispersive X-ray diffraction (EDXD) pattern for NaCI at the ambient and a high pressure. (Reprinted with permission from Kluwer Academic Publishers.)...

Fig. 22. A stack plot showing the evolution of the energy dispersive X-ray diffraction spectrum of SnS2 following the injection of (rf-C6H5)2Co. Each spectrum took 10 s to record. The signals at 25 and 29 keV arise from resonances from the tin K and K core electrons and have been used to normalize the other signals [reproduced with permission from (100). p. 1831.

Spadavecchia J., Ciccarella G., Buccolieri A., Vasapollo G., and Rella R., Synthesis and structure of amorphous phase Cr(ll) hemiporphyrazine using energy dispersive X-ray diffraction, J. Porph. Phthalocyanines, 1, 572-578, 2003. 

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