TITLE

Secondary electron emission from MgO protective layer by Auger neutralization of ions

AUTHOR(S)
Uhm, Han S.; Choi, Eun H.; Cho, Guang S.
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/19/2009, Vol. 94 Issue 3, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A theoretical model of the secondary electron emission yield (γ) from a MgO layer is developed based on the Auger neutralization of ions, resulting in an analytical expression of γ in terms of the ionization energy Ei for the density of states in the valence band, being an exponentially decaying function of the energy deviation from the band characteristic energy of 7.88 eV. The analytical expression recovers the previously known empirical formulation of γ∼(Ei-2φ) for the work function φ. Results of the theoretical model agree well with the measured data in terms of the data trend.
ACCESSION #
36339298

 

Related Articles

  • Secondary Electron Distribution of Atmospheric Nitrogen Molecule by 350 eV Electron Impact. OZER, Z. N.; ULU, M.; DOGAN, M. // Acta Physica Polonica, A.;2016, Vol. 129 Issue 1, p20 

    Electron collisions with nitrogen molecules have an important role for example in ionospheric and auroral phenomena in the upper atmosphere of the Earth. These processes are important in electrical discharges involving atmospheric gases. Due to the key features electron collisions with N2 have...

  • A general nonlinear fluid model for reacting plasma-neutral mixtures. Meier, E. T.; Shumlak, U. // Physics of Plasmas;Jul2012, Vol. 19 Issue 7, p072508 

    A generalized, computationally tractable fluid model for capturing the effects of neutral particles in plasmas is derived. The model derivation begins with Boltzmann equations for singly charged ions, electrons, and a single neutral species. Electron-impact ionization, radiative recombination,...

  • Recent developments in the theory of electron emission. Lohmann, B.; Srivastava, R.; Kleiman, U.; Blum, K. // AIP Conference Proceedings;2002, Vol. 604 Issue 1, p229 

    We present our results for resonant Auger emission after deep inner shell electron impact excitation. A full ab initio relativistic distorted wave approximation is applied where intermediate coupling between the different configuration state functions of the resonantly excited states and...

  • Electron energy deposition in atomic oxygen. Slinker, S. P.; Taylor, R. D.; Ali, A. W. // Journal of Applied Physics;1/1/1988, Vol. 63 Issue 1, p1 

    Develops a discrete, time-dependent energy deposition model that is applied to the study of high-energy electron-beam deposition in atomic oxygen. Calculation of secondary electron distribution for a spatially homogeneous electron beam impinging upon a gas; Categories of electron impact...

  • Emission from OH(A) produced in the dissociative recombination of H2O+ with electrons. Sonnenfroh, D. M.; Caledonia, G. E.; Lurie, J. // Journal of Chemical Physics;2/15/1993, Vol. 98 Issue 4, p2872 

    The production of OH(A) from the dissociative recombination of H2O+ with electrons has been studied in a crossed jet experiment. The branching ratio into the OH(A)+H product channel has been estimated to be 7.6%+8%/-4% for an electron temperature of ∼1000 K. The internal energy of the OH(A)...

  • Secondary electron emission at anode, cathode, and floating plasma-facing surfaces. Ordonez, C. A.; Peterkin, R. E. // Journal of Applied Physics;3/1/1996, Vol. 79 Issue 5, p2270 

    Examines the secondary electron emission coefficient for electron impact on anode, cathode and electrically floating plasma-facing surfaces. Description on the plasma configuration considered; Calculations for a carbon surface; Evaluation on the secondary electron emission coefficient for an...

  • Threshold Electron Impact Ionization of SF6 Molecule. Zavilopulo, A. N.; Shpenik, O. B.; Snegursky, A. V.; Chipev, F. F.; Vukstich, V. S. // Technical Physics Letters;Sep2005, Vol. 31 Issue 9, p785 

    The relative cross sections of a dissociative ionization of SF6 molecules by electron impact in the near-threshold energy region have been determined. The experiments were performed on a setup providing for ion mass separation and detection using a monopole mass spectrometer. The energy...

  • Ionization and Recombination with Electrons: Laboratory Measurements and Observational Consequences. Savin, Daniel Wolf // AIP Conference Proceedings;2005, Vol. 774 Issue 1, p297 

    Reliably interpreting spectra from both photoionized and electron-ionized cosmic plasmas requires an accurate understanding of the ionization balance of the source and the underlying atomic physics which produces the ionization structure. Uncertainties in ionization balance calculations hamper...

  • Dissociation and vibrational excitation of cold HD by electron impact. Stroe, M.; Fifirig, M. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jan2011, Vol. 61 Issue 1, p63 

    We have investigated the competition between dissociative excitation, dissociative recombination and vibrational excitation processes taking place in the reactive collisions of vibrationally cold HD with electrons. The energy range 1-12 eV has been considered.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics