Reconstructing x-ray fluorescence microtomograms

Schroer, Christian G.
September 2001
Applied Physics Letters;9/17/2001, Vol. 79 Issue 12, p1912
Academic Journal
X-ray fluorescence microtomography allows one to map element distributions inside a sample with high sensitivity and resolutions in the micrometer range. Quantitative reconstruction of the element concentrations from the fluorescence data requires correction for the attenuation inside the sample. However, the attenuation of the fluorescence radiation is not directly accessible by experiment. The method described self-consistently estimates this attenuation and allows one to reconstruct relative concentrations. This is demonstrated on numerical as well as experimental data. A measure for the quality of the reconstruction is given. © 2001 American Institute of Physics.


Related Articles

  • Confocal micro-x-ray fluorescence spectrometer for light element analysis. Smolek, S.; Pemmer, B.; Fölser, M.; Streli, C.; Wobrauschek, P. // Review of Scientific Instruments;Aug2012, Vol. 83 Issue 8, p083703 

    An existing micro-x-ray fluorescence (micro-XRF) spectrometer designed for light element analysis (6 ≤ Z ≤ 14) has been extended to confocal geometry: a second polycapillary x-ray optic has been introduced in front of the energy dispersive x-ray detector. New piezo positioners for...

  • Micro-CT Imaging of Rat Bone and Lumber Vertebra using Synchrotron Radiation. Rao, Donepudi V.; Cesareo, Roberto; Brunetti, Antonio; Akatsuka, Takao; Yuasa, Tetsyua; Takeda, Tohoru; Tromba, Giuliana; Gigante, Giovanni E. // AIP Conference Proceedings;3/15/2009, Vol. 1099 Issue 1, p896 

    Micro-tomographic imaging with a spatial resolution on the micrometer scale offers owes a high potential to perform certain types of measurements that were not feasible with other techniques or conventional laboratory methods. The synchrotron X-ray source gives substantial advantages because of...

  • Market Profile: Energy-Dispersive X-ray Fluorescence.  // Spectroscopy;Jul2011, Vol. 26 Issue 7, p10 

    The article offers information on the energy-dispersive x-ray fluorescence (EDXRF) along with its electromagnetic spectrum and instruments.

  • Evidence for [sup 1]L[sub a] fluorescence from jet-cooled 3-methylindole-polar solvent complexes. Short, Kurt W.; Callis, Patrik R. // Journal of Chemical Physics;10/1/2000, Vol. 113 Issue 13 

    The ratio of nonresonant two-photon induced fluorescence excitation spectra using circularly and linearly polarized light for jet-cooled 3-methylindole complexed with a series of increasingly basic hydrogen bond acceptors (water, methanol, ethanol, diethylether, diethylamine and triethylamine)...

  • Theory of fluorescence excitation spectra using anharmonic-coriolis coupling in S1 and internal conversion to S0. I. General formalism. Helman, Adam; Marcus, R. A. // Journal of Chemical Physics;10/1/1993, Vol. 99 Issue 7, p5002 

    A treatment of one- or two-photon fluorescence excitation spectra is described using the vibration–rotation coupling of zeroth order states in the excited electronic state and nonadiabatic coupling to the ground state. Using perturbation theory, experimental harmonic frequencies, an...

  • Wavelength-dispersive x-ray fluorescence detector. Kirkland, J.P.; Kovantsev, V.E.; Dozier, C.M.; Gilfrich, J.V.; Gibson, W.M.; Qi-Fan Xiao; Umezawa, K. // Review of Scientific Instruments;Feb1995, Vol. 66 Issue 2, p1410 

    Describes a wavelength-dispersive x-ray fluorescence detector system that can be used to discriminate fluorescent photon energies for practically any incident flux. Use of a Kumakhov polycapillary lens to collimate fluorescent photons from a sample; Resolution of the system; Performance.

  • X-ray studies of polymer/gold nanocomposites. Lin, Binhua; Morkved, Terry L. // Journal of Applied Physics;3/15/1999, Vol. 85 Issue 6, p3180 

    Focuses on a study which showed that x-ray reflection standing wave fluorescence spectroscopy are highly sensitive techniques for probing the spatial distribution of gold nanoparticles in polymer thin films. Experimental methods of the study; Result and discussion; Conclusions.

  • Rovibronic analysis of the laser induced fluorescence excitation spectrum of the jet-cooled... Powers, David E.; Pushkarsky, Michael B.; Miller, Terry A. // Journal of Chemical Physics;5/1/1997, Vol. 106 Issue 17, p6863 

    Reports on the rovibronic analysis of the laser induced fluorescence excitation spectrum of the jet-cooled methoxy radical. Assigning an extensive set of vibrational levels with the aid of increased vibrational and rotational cooling; Fermi resonance.

  • Chemical reaction jet spectroscopy, molecular structure, and the bending potential of the A 1A″ state of monofluorosilylene (HSiF). Harper, Warren W.; Karolczak, J.; Clouthier, Dennis J.; Ross, Stephen C. // Journal of Chemical Physics;7/15/1995, Vol. 103 Issue 3, p883 

    The jet-cooled laser induced fluorescence excitation spectrum of the A 1A″–X 1A′ band system of HSiF has been observed with the chemical reaction jet technique. Vibrational analysis of the spectrum gave upper state fundamental vibrational frequencies of ν1=1547 cm-1,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics