Auger-electron cascades in diamond and amorphous carbon
نویسندگان
چکیده
Beata Ziaja,* David van der Spoel, Abraham Szöke, and Janos Hajdu Department of Biochemistry, Biomedical Centre, Box 576, Uppsala University, S-75123 Uppsala, Sweden Department of Theoretical Physics, Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Cracow, Poland High Energy Physics, Uppsala University, P.O. Box 535, S-75121 Uppsala, Sweden Lawrence Livermore National Laboratory, Livermore, California 94551 ~Received 6 June 2001; published 12 November 2001!
منابع مشابه
Electron Cascades Produced by Photoelectrons in Diamond
Secondary electron cascades are responsible for significant ionizations in macroscopic samples during irradiation with X-rays. A quantitative analysis of these cascades is needed, e.g. for assessing damage in optical components at X-ray free-electron lasers, and for understanding damage in samples exposed to the beam. Here we present results from Monte Carlo simulations, showing the space-time ...
متن کاملTribological properties of hydrogenated and hydrogen-free diamond-like carbon coatings
The amorphous hydrogenated carbon coatings (a-C:H) deposited by plasmaassisted chemical vapour deposition (PACVD), and tetrahedral amorphous carbon coatings (ta-C) deposited by pulsed vacuum arc discharge were evaluated by scratch adhesion testing, load-carrying capacity testing and tribological testing in unlubricated and lubricated sliding conditions. The wear surfaces of the coatings and cou...
متن کاملXPS and Auger study of the radial variations of diamond thin films grown by the oxy-acetylene flame method
Free standing diamond thin films grown by the oxyracetylene frame method have been investigated by X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). The radial distribution of the sp2-hybridized carbon species on the films and, consequently, the film quality, have been determined. While XPS does not seem to be an appropriate technique to distinguish between very smal...
متن کاملGrowth of carbon nanostructures upon stainless steel and brass by thermal chemical vapor deposition method
The lack of complete understanding of the substrate effects on carbon nanotubes (CNTs) growth poses a lot oftechnical challenges. Here, we report the direct growth of nanostructures such as the CNTs on stainless steel 304and brass substrates using thermal chemical vapor deposition (TCVD) process with C2H2 gas as carbon sourceand hydrogen as supporting gas mixed in Ar gas flow. We used an especi...
متن کاملStructures, origin and evolution of various carbon phases in the ureilite Northwest Africa 4742 compared with laboratory-shocked graphite
Mineralogical structures of carbon phases within the ureilite North West Africa 4742, a recent find, are investigated at various scales by high-resolution transmission electron microscopy (HRTEM), Raman microspectrometry and X-ray diffraction. Ureilites are the most carbon-rich of all meteorites, containing up to 6 wt.% carbon. Diamond, graphite and so-called “amorphous carbon” are typically de...
متن کامل