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  • 1990-1994  (3)
  • 25.70.Gh  (1)
  • 36.40.+d  (1)
  • Polymer and Materials Science  (1)
  • Nostoc muscorum
  • sesquiterpenes
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Mass and charge release by the evaporation of particles from compound nuclei around mass 60 (1992)
    Springer
    The European physical journal 342 (1992), S. 61-66 
    Details
    ISSN: 1434-601X
    Keywords: 24.60.Dr ; 25.55.-e ; 25.70.Gh
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Reaction product cross sections have been measured for reactions of4He projectile with54,56Fe,58Ni and59Co targets in the bombarding energy range 14–27 MeV. The cross-section-weighted average charge $$\overline {\Delta Z}$$ and mass $$\overline {\Delta A}$$ removed from the compound system were deduced and compared with results reported for heavy-ion induced reactions. Variation of $$\overline {\Delta A}$$ with E CN * is independent of the initial angular momentum of compound nucleus in theA=60 mass region in contrary to the rare-earth region. This would suggest a strong angular momentum removal from the compound nucleus by evaporation of particles forA≈60 nuclei. The average evaporated charge $$\overline {\Delta Z}$$ depends on both the CN excitation energy E CN * and the compound nucleusN andZ numbers. The $$\overline {\Delta A}$$ and $$\overline {\Delta Z}$$ dependence on excitation energy and the projectile-target combination can be understood in terms of the statistical model calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294489
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Evolution of bulk-like properties in mercury microclusters (1990)
    Springer
    The European physical journal 17 (1990), S. 309-312 
    Details
    ISSN: 1434-6079
    Keywords: 71.30.+h ; 36.40.+d
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The transition from non-metallic to metallic behavior of mercury microclusters, Hg n , withn ranging from 2 to 79, is investigated using first principles tight-binding linear muffin-tin orbital method. Then dependence of the ionization potential, the cohesive energy, the energy gap, and the nature of the bonding indicates metallic behavior for Hg n withn≧80. The average bond length of Hg clusters is found to be larger than that of the bulk. Our results are in good agreement with experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437371
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    TSDC studies on thermoelectrets of CR-39(DOP) (1990)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 41 (1990), S. 48-51 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Aus dem Polymer CR-39(DOP) wurden Thermoelektrete formiert, und die thermisch stimulierten Entladungsströme wurden gemessen. Die Einflüsse unterschiedlicher Formierungstemperaturen, unterschiedlicher Feldstärken und der Lagerzeit wurden untersucht, um das Elektretverhalten dieses Materials zu beschreiben. Die Polarisation ist dipolaren Ursprungs. Die Aktivierungsenergic und die Relaxationszeit wurden berechnet.
    Notes: Thermoelectrets of CR-39(DOP) were formed and their thermally stimulated discharge current studied. In the present work, effects of different forming temperatures, polarizing fields and storage times have been studies with a view to understand the electret behaviour of this material. The polarization seems to have a dipolar origin. The activation energy and relaxation times have also been calculated.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1990.010410112
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    Paper (German National Licenses)
    Fulltext
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