Electron reflection
نویسندگان
چکیده
منابع مشابه
Electron Reflection in Monte Carlo Simulations with the code GEANT
Target preheat is a significant concern in inertial confinement fusion experiments because, when the temperature of the target becomes too large, the areal density (density times radius) required for ignition cannot be attained. The majority of preheat comes from fast electrons produced when the laser interacts with the target. When these energetic electrons are slowed by collisions, they relea...
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Several basic physical concepts of applying eq. Ik = I sigma Nxt to surface microanalysis by reflection electron energy-loss spectroscopy (REELS) are clarified. Here Ik and I are the integrated intensities of the core ionization edge and the low loss part, sigma is the scattering cross section of element x with atomic concentration Nx, and t is the specimen thickness. The reflected inelastic el...
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In order to utilize hard x-ray free electron lasers (XFEL's) when they are extended to attosecond pulse lengths, it is necessary to choose optical elements with minimal response time. Specular grazing-incidence optics made of low-Z materials are popular candidates for reflectors since they are likely to withstand x-ray damage and provide sufficiently large reflectivities. Using linear-optics re...
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Using reflection high-energy electron diffraction, we have observed diffraction patterns from both vertically aligned and randomly oriented multiwalled carbon nanotube samples. The patterns, for both samples, consist of rings and are similar to the patterns observed in x-ray diffraction from multiwalled carbon nanotubes. The ring radii are roughly consistent with powder diffraction from graphit...
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ژورنال
عنوان ژورنال: Nature Nanotechnology
سال: 2009
ISSN: 1748-3387,1748-3395
DOI: 10.1038/nnano.2009.45