Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 227-233 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The temporal development of laser driven single mode perturbations in thin Al foils has been measured using extreme ultraviolet (XUV) laser radiography. 15, 30, 70 and 90 μm single modes were imprinted on 2 μm thick Al foils with an optical driver laser at 527 nm for intensities in the range 5×1012 to 1.5×1013 W cm−2. The magnitude of the imprinted perturbation at the time of shock break out was determined by fitting to the data estimated curves of growth of the Rayleigh–Taylor instability after shock break out. The efficiency of imprinting is independent of perturbation wavelength in the parameter range of this experiment, suggesting little influence of thermal conduction smoothing. The results are of interest for directly driven inertially confined fusion. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 2285-2292 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Plasma-wall interaction and impurity transport processes in the outermost region of magnetically confined hot plasmas (the so-called plasma edge) must be well understood for successful development of future thermonuclear fusion reactors. To this goal, sufficiently detailed edge plasma diagnostics are in great demand. By injecting a fast Li beam into the edge plasma region, a great number of information can be obtained with excellent space and time resolution. This so-called Li-beam plasma spectroscopy gives access not only to edge plasma density profiles from the collisionally excited Li atoms, but also to the impurity concentration and temperature profiles via line emission induced by electron capture from the injected Li atoms by the impurity ions. Full utilization of all capabilities requires a reliable data base for the atomic collision processes involving injected Li atoms and plasma constituents (i.e., electrons, hydrogen ions, and relevant impurities in their various charge states), since a precise modeling of Li beam attenuation and excited-state composition has to be made for evaluating desired plasma properties from the related spectroscopical measurements. The most recent methodical improvement permits a fully consistent determination of absolute edge plasma density profiles by measuring only relative LiI line emission profiles. This is of special interest for investigating rapid edge plasma density fluctuations in connection with, e.g., ELMs, L-H mode transition, turbulence or edge cooling by impurity injection. This paper describes the capabilities of Li-beam edge plasma spectroscopy by way of illustrative examples from measurements at the tokamak experiment TEXTOR.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 0042-207X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 268 (1974), S. 19-25 
    ISSN: 1618-2650
    Keywords: Identifizierung von Pyrolysebeiprodukten in Ruß und Pyrokohlenstoff ; Chromatographie, Gas, Massenspektrometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Im Rahmen der Entwicklung verbesserter Brennstoffteilchen für Hochtemperaturreaktoren wurde der in Fließbetten auf Brennstoffkernen abgeschiedene Pyrokohlenstoff sowie der bei diesem Pyrolysevorgang entstehende Ruß auf Pyrolysebeiprodukte untersucht. Ziel dieser Studie ist es, einen Beitrag zur Kenntnis des Abscheidungsmechanismus von Pyrokohlenstoff auf den Brennstoffkernen während der thermischen Zersetzung von niederen Kohlenwasserstoffen zu geben. Die Untersuchungen betrafen Pyrolyseprodukte von Äthin und Propen. Die Extraktion erfolgte nach verschiedenen Methoden. Die Extrakte wurden sowohl massenspektrometrisch untersucht, als auch über eine Gas-Chromatograph-Massenspektrometerkombination aufgetrennt. Im Ruß konnten 21 polycyclische, aromatische Kohlenwasserstoffe identifiziert werden. Pyrokohlenstoff enthält darüber hinaus noch höher molekulare polycyclische Kohlenwasserstoffe.
    Notes: Abstract In the frame of further development of fluidized bed coated particle fuel for high temperature reactors, both the pyrocarbon desposited on fuel kernels and the soot obtained besides, were investigated to their pyrolysis by-products. Target of the study was to improve the understanding of the mechanisms in pyrocarbon desposition on fuel kernels during the thermal decomposition of lower hydrocarbons. This study was on products formed in acetylene and propylene pyrolysis, the extraction being performed by various methods. The extracts were separated by gas-chromatographic and mass-spectrometric methods. 21 Polycyclic aromatic hydrocarbons could be identified in the soot. Beyond those the pyrocarbon containes polycycles of even higher molecular weights.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 65 (1924), S. 474-477 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...