Energy distributions and emission coefficients of secondary ions ejected from AIIIBV group semiconductors

Koval, A. G.; Fizgeer, B.M.; Litvinov, V. A.

doi:10.1007/bf00895639

Cited by 1 publication

(1 citation statement)

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“…It may be possible in violent binary collisions that the corresponding deexcitation rates would be enhanced as a result of more favorable overlap of the electronic orbitals during the collision. Although there is some indirect evidence of such collisional interatomic Auger decay from SIMS data [ 64 – 68 ], there seems to be no specific spectral data available that indicates whether such collisional interatomic transitions significantly contribute to the collisional deexcitation process in ionic solids.…”

Section: Excitation States Deexcitation Energies and Spectral LImentioning

confidence: 99%

Bombardment induced electron-capture processes at sodium halide surfaces

Fine¹,

Szymoński²,

Kołodziej³

et al. 1996

J. Res. Natl. Inst. Stand. Technol.

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Discrete features observed in the energy distribution of electrons emitted from ion-bombarded sodium halide surfaces can be attributed to a new type of collisional deexcitation mechanism. Such a mechanism involves sodium atoms in bombardment-excited autoionizing states that are the result of cascade collisions within the crystal lattice. This deexcitation process, in contrast to that for a metal, is not simply a consequence of the inner-shell lifetime of the initial collisionally excited sodium Na+* ion. Rather, the deexcitation consists of a sequence of lattice collisions during which the excited Na+* ion captures an electron to form the inner-shell-excited Na0* states responsible for the observed transitions. The formation of such autoionizing Na0* states is described within the framework of a new model in which excitation processes and localized collisional electron-transfer mechanisms are taken into account. These localized electron-transfer processes make possible new channels for electronic deexcitation, chemical dissociation, and defect production; they are critical for understanding inelastic ion-surface collisions in solids.

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Section: Excitation States Deexcitation Energies and Spectral LImentioning

confidence: 99%