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ELECTRON-EXPOSURE EFFECTS ON DESORPTION OFF-(Cl-)AND(F+)(Cl+)IONS FROM ADSORBEDCF2Cl2

Author

Listed:
  • Q.-B. LU

    (Laboratory for Surface Modification, and Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8019, USA)

  • THEODORE E. MADEY

    (Laboratory for Surface Modification, and Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8019, USA)

Abstract

Electron-exposure effects on the desorption ofF-(Cl-)andF+(Cl+)ions from 1 MLCF2Cl2/Ru(0001), 1 MLCF2Cl2/1 ML Xe/Ru(0001) and 5 MLCF2Cl2/Ru(0001) surfaces have been studied. It is observed that for a≤1MLCF2Cl2/Ru surface, the anion yield shows a rapid decrease with increasing electron exposure, while the cation yield exhibits an increase. In contrast, an opposite behavior is observed for a 5 MLCF2Cl2/Ru surface. For 1 MLCF2Cl2adsorbed on a 1 ML Xe-spacer layer, the effect tends to switch the behavior from the monolayer to the multilayer. These results indicate thatCl-ions accumulated on the multilayer or the monolayer surface on a Xe spacer by the polarization potential have an electrostatic effect on the desorption yields of anions and cations. Moreover, from the attenuation of theF-yield of a 1 MLCF2Cl2-covered surface with electron exposure, the electron-induced dissociation is estimated to be9.2(± 2.0) × 1016cm2.

Suggested Citation

  • Q.-B. Lu & Theodore E. Madey, 1999. "ELECTRON-EXPOSURE EFFECTS ON DESORPTION OFF-(Cl-)AND(F+)(Cl+)IONS FROM ADSORBEDCF2Cl2," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 6(03n04), pages 313-317.
    • Handle: RePEc:wsi:srlxxx:v:06:y:1999:i:03n04:n:s0218625x99000305
    DOI: 10.1142/S0218625X99000305
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