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  • Articles: DFG German National Licenses  (2)
  • 1985-1989  (1)
  • 1980-1984  (1)
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  • Articles: DFG German National Licenses  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Tests of a large air-core superconducting solenoid as a nuclear-reaction-product spectrometer (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 1682-1693 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An air-core superconducting solenoid, with a diameter of 0.2 m and a length of 0.4 m, has been configured for use as a heavy-ion reaction-product spectrometer (E/A≤5 MeV/u) near θ=0 °. The spectrometer has a large solid angle (10–35 msr) and properties suitable for time-of-flight measurements with flight paths (approximately-greater-than) 2 m. The performance of the spectrometer was established using α-particle sources and nuclear-reaction products from heavy-ion collisions. The characteristics of air-core magnets are compared to those of steel-yoke magnets. The simplicity and ease of operation of the air-core magnet, without significant problems from the (axial) fringe fields, suggests that larger air-core magnets with dΩ≥20 msr and capable of focusing ions with E/A≥30 MeV/u are feasible. Other applications of solenoids and combinations of solenoids with radial electric-field lenses (ELCO lenses) are also discussed, including designs which focus more than one charge state simultaneously.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139368
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Darstellung und spektroskopische Eigenschaften einiger Perbromierter und periodierter Oligosilane (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 488 (1982), S. 27-37 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Spectroscopie Properties of Some Perbromo- and PeriodooligosilanesThe cleavage of octaphenylcyclotetrasilane and decaphenylcyclopentasilane with Iodine, phosphorus pentabromide and bromine and the successive reaction with HBr/AlBr3 or HI/AlI3 give n-Si4Br10, n-Si5Br12, n-Si4I10, and n-Si5I12. Their IR and Raman spectra are discussed with the aid of a normal coordinate analysis. The spectra of the cyclic iodosilanes Si4I8, Si5I10, and Si6I12, prepared previously [1], are included in the discussion.
    Notes: Die Spaltung von Oktaphenylcyclotetrasilan und Dekaphenylcyclopentasilan mit Iod, Phosphorpentabromid oder Brom und anschließende Umsetzung mit HBr/AlBr3 bzw. HI/AlI3 erlaubt die Darstellung der bisher unbekannten Halogensilane n-Si4Br10, n-Si4I10, n-Si5Br12 und n-Si5I12. Ihre IR- und Raman-Spektren werden mit Hilfe einer Normalkoordinatenanalyse diskutiert. Jene der kürzlich dargestellten [1] cyclischen Iodsilane Si4I8, Si5I10 und Si6I12 werden mit einbezogen.
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824880103
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    Paper (German National Licenses)
    Fulltext
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