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  • Treatment of the heat-load—associated contrast in synchrotron radiation topography [Elektronski vir]
    Zontone, F. ; Mancini, Lucia
    We present a model which explains the heat-load-associated contrast in X-ray topographs, which can occur when using third-generation high-energy synchrotron radiation sources. The thermal deformation ... is treated in terms of an angular distortion σπ, which is a function of the absorbed power and the mechanical, thermal and diffraction properties of the sample. We obtain simple, criteria for the exposure time (and/or filtering of the beam) of a topographic experiment, to remain below an allowed maximum distortionδθ max. Experiments performed using either filters or a stroboscopic shutter confirm the validity of the present criteria.
    Source: Il Nuovo cimento. - ISSN 1827-6121 (Vol. 19D, iss. 2/4, Feb./Apr. 1997, str. 247-256)
    Type of material - e-article ; adult, serious
    Publish date - 1997
    Language - english
    COBISS.SI-ID - 143106051