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  • 1975-1979  (3)
  • 1970-1974  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    New differential Bottcher-Onsager method used to determine polarizability and apparent radius of tungstosilicate (SiO4(WO3)124-) (1977)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 81 (1977), S. 696-703 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100523a003
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    High energy x-ray satellites ofL 2,3 emission bands of Na, Mg, Al, and Si (1972)
    Springer
    The European physical journal 251 (1972), S. 271-288 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The x-ray satellites found on the high energy sides of theL 2,3 emission bands of Na, Mg, Al, and Si have previously been attributed to the radiative decay of double ionization states. However, in some recent papers it has been proposed that the satellites in Al and Si may arise from the simultaneous radiative decay of a core ionization state and a volume plasmon. A detailed investigation of the high energy satellites of theL 2,3 x-ray emission bands of Na, Mg, Al, and Si have been made for incident electron energies from 500 eV to 5 keV and the results compared with the double ionization theory. Plasmon involvement is also considered. The present results lend additional support to the first interpretation; namely, that the satellites arise from the radiative decay of atoms with a double vacancy in theL 2,3 (2p) shell and not from the plasma phenomenon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01394634
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Observed radiation from surface plasmons in aluminum (1970)
    Springer
    The European physical journal 239 (1970), S. 337-342 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Plasma radiation from thin films of aluminum bombarded by non-normally incident 80 keV electrons has been investigated. Radiative decay of both volume plasmons and surface plasmons was observed with the surface plasmon radiation being very sensitive to contamination of the film surface by an oxide layer. The surface resonance occurs at 10.2 eV, whereas the volume resonance is at 15 eV. These values are in accord with electron energy-loss experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01398244
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Methods to determine the temperature dependence of the pre-exponential factor of the Arrhenius equation from thermogravimetric data (1977)
    Springer
    Journal of thermal analysis and calorimetry 11 (1977), S. 417-422 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé Les méthodes bien connues de Coats-Redfern, Freeman-Carroll et Achar et al. ont été modifiées afin de tenir compte du fait que le facteur préexponentiel donnant la constante de vitesse dans l'expression d'Arrhenius est une fonction de la température. Ces modifications permettent d'exprimer l'équation d'Arrhenius sous une forme plus générale. Plusieurs méthodes numériques sont proposées pour exprimer la relation du facteur préexponentiel avec la température à partir des données TG et des courbes TG dérivées.
    Abstract: Zusammenfassung Die bekannten Methoden von Coats-Redfern, Freeman-Carroll sowie Achar und Mitarbeiter wurden auf solche Weise modifiziert, dass sie die Temperaturabhängigkeit des präexponentiellen Faktors in der Arrhenius-Gleichung für die Geschwindigkeitskonstante enthalten. Durch diese Abänderungen werden diese Methoden in ihre ganz allgemeine Arrhenius-Form überführt. Vorschläge betreffs verschiedener numerischer Methoden zur Ermittlung der Temperaturabhängigkeit des präexponentiellen Faktors aus thermogravimetrischen und derivierten thermogravimetrischen Angaben werden gemacht.
    Notes: Abstract The well-known methods of Coats-Redfern, Freeman-Carroll, and Achar et al. are modified to include the temperature dependence of the pre-exponential factor in the Arrhenius expression for the rate constant. These modifications serve to cast these methods into their most general Arrhenius form. Suggestions are given regarding various numerical methods for extracting the temperature dependence of the preexponential factor from thermogravimetric and derivative thermogravimetric data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01903693
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Dispersion of surface plasmons in dielectric-metal coatings on concave diffraction gratings (1970)
    Springer
    The European physical journal 235 (1970), S. 97-109 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Anomalies in the intensity ofp-polarized light from concave diffraction gratings (Wood's anomalies) have been used to obtain surface plasmon dispersion curves for dielectric-metal layers on the grating surface. These include a 350 Å MgF2 layer and Al2O3 layers varying from a few angstroms to over 800 Å on an Al substrate. The wavelength range of the incident and diffracted light is from the visible to the vacuum ultraviolet (7,500−500 Å). Anomalous polarization peaks for Al2O3 layers in the vacuum ultraviolet (at ∼ 1,600 Å) are shown to shift significantly to longer wavelengths for only a few angstroms (up to 50 Å) of oxide thickness, while for thicknesses greater than ∼ 50 Å any further shift is small. In the visible region (〉 4,000 Å), on the other hand, the wavelength shifts are small for dielectric thicknesses up to ∼ 50 Å, but are large for thicknesses of several hundred angstroms. These results are in substantial agreement with the theoretical dispersion curves for these cases. Also considered are some of the effects of diffusion pump oil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395160
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Optical property of bovine plasma albumin between 2 and 82 eVA part of this work was presented at the 4th International Conference on Vacuum Ultraviolet Radiation Physics, Hamburg, Germany (July 1974). (1975)
    New York : Wiley-Blackwell
    Biopolymers 14 (1975), S. 839-847 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The optical constants of bovine plasma albumin in the form of a dry solid film have been determined in the 2-82 eV region of photon energy. The extinction coefficient k was obtained by transmission measurements on thin films on a calcium fluoride substrate and on ultrathin films of polystyrene supported by mesh screen. The refractive index n was determined by a Kramers-Kronig analysis using the measured values of k. The complex dielectric function ε and the energy-loss function -Im(1/ε) for charged particles were derived from the data of n and k. The result for k exhibit, in addition to the well-known absorptions at 4.4, 5.5, and 6.4 eV, a small peak at 7.6 eV, a shoulder around 9.7 eV, and a strong peak at 14.0 eV. A prominent peak at 22.7 eV in the energy-loss function exhibits a large degree of collective nature.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.1975.360140412
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    Paper (German National Licenses)
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