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    ABSTRACT: In this paper, an analysis of some MOS inversion layer models based on surface potential is presented. In semi- classical cases the implicit model and an explicit approximate relation for surface potential as function of terminal voltage is used. This is compared with models which takes into account the quantum mechanical effects that arise in deep-submicron MOSFET's. These effects are incorporated in model by coupled Poisson-Schrodinger equation solved using variational wave function approach, as well as numerical solver.
    No preview · Conference Paper · Jun 2008
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    ABSTRACT: The effect of negative ions on the probe characteristic is studied theoretically. The reliability of results obtained from probe characteristics is analyzed. The methods of determining the energy distribution functions of charged particles is analyzed as an inverse ill-posed problem. A Tikhonov’s regularization procedure for detection of negative ions from a probe characteristic is described. This method parallels the Dryvestein method with the key difference stemming from the fact that experimental determination of the second derivative of the probe characteristic is avoided. For a small ratio of negative ion to electron densities and quite plasma, the energy distribution, temperature and density for the electrons and negative ions can be estimated only from the probe characteristic and the errors in the experimental data. The model functions, simulating experimental energy distribution for the electrons and negative ions, are introduced to test applicability limitations of the method. In addition, the comparative advantages of the method are presented as well.
    No preview · Article · Nov 1998 · Journal of Applied Physics
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    ABSTRACT: The internal and external spectra of the acenaphthene crystal have been studied using Raman spectroscopy. The assignment of the observed spectra is supported by normal coordinate calculations in the crystal frame. Consequences of the low accuracy in determining the hydrogen-atom positions are discussed.
    No preview · Article · Jan 1979 · The Journal of Chemical Physics
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