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  • American Institute of Physics (AIP)  (2)
  • Wiley-Blackwell  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Stopping power measurements of 0.5–10.5 MeV 7Li ions in polyimide, vyns, formvar, and polysulfone (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 86 (1999), S. 3934-3938 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Accurate stopping powers for 7Li ions in four (co)polymers were measured using the transmission technique in the energy range of 0.5–10.5 MeV. The estimated uncertainty in the stopping power values is ∼2.5%. A comparison of the experimental data is made with various parametrizations of the stopping power found in the literature. Deviations of the parametrizations from our experimental data range from 5 to 20%. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.371310
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  • 2
    Electronic Resource
    Electronic Resource
    Stopping powers of 200–3200 keV 4He and 550–1550 keV 1H ions in polyimide (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 3147-3154 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Accurate stopping powers of polyimide have been determined for mean energies (E) in the range of 200 keV≤E≤3200 keV for 4He ions and 550 keV≤E≤1550 keV for 1H ions, using the transmission method for foils with areal densities of 30–225 μg/cm2. The overall uncertainties of ∼2% are mainly due to the foil thickness determination. The present data have been parametrized and compared to results obtained by previous authors in the upper energy range and to various parametrizations found in the literature. The best description of the data is given by Bragg's rule calculations using parametrized elemental stopping powers that were derived from large data sets (deviations 〈2%). No support is found for the cores-and-bonds model showing deviations of 3%–5%, that may be due to the neglect of phase state effects. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363277
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  • 3
    Electronic Resource
    Electronic Resource
    PIXE and micro-PIXE studies of exogenous element distributions in animal organs (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 20 (1991), S. 283-286 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A pilot study was undertaken with aluminium and strontium in order to determine the path taken when they enter an organism. Rabbits received an intramuscular injection of A1, and thin tissue cryo-sections and pelletized and incinerated samples were investigated by the PIXE method. The best PIXE detection limits (ca. 60 μg g-1 dry weight) were obtained for thin tissue samples. On the basis of the chemical similarity of Ca and Sr, Sr ions were used to mark the Ca incorporation in the mineralized tissue. At different times of gestation (20-30 d), pregnant rabbits received an intraperitoneal injection of Sr. The animals were killed 7 h after the injection and the hind legs and skulls of the embryos were subjected directly to micro-PIXE measurements. The results revealed that Sr incorporation in the embryo is an age-dependent process. The highest Sr concentrations were found for 24-d old embryos whereas at the end of gestation (30 d) the Sr concentration had decreased by a factor of ca. 10.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300200607
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