Analysis of electron spectra from grazing-incidence collisions of Ar2+ with Pb(111) single-crystal surfaces

Eeken, P.; Fluit, J.M.; Niehaus, A.; Уразгильдин, И.Ф.

doi:10.1016/0039-6028(92)90284-d

Cited by 69 publications

(19 citation statements)

References 21 publications

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“…4 the conclusions arrived at for He + collisions will be substantiated by simulating the electron spectra in solving the rate equations for the various processes shown in Fig. 5 using the model presented m [11,12]. We have indicated in the measured spectra which of the men- 2) can in principle also be due to AC involving the Cs 6s orbital which is however only weakly populated below 0.6 ML Cs coverage [19].…”

Section: Discussionmentioning

confidence: 98%

“…Transition energies and rates are modeled in the same way as in [11,12,14]. The lifetime of He-* against autodetachment is assumed to be that of the free negative ion resonance [41].…”

Section: Model Calcultionsmentioning

confidence: 99%

“…In order to put our interpretation of the spectral features in the electron spectra on a firmer basis we simulate the results obtained for He + collisions by using the model introduced in [ 11,12]. Each charge state of the projectile shown in the reaction scheme of Fig.…”

Section: Model Calcultionsmentioning

confidence: 99%

“…If assumptions are made regarding the angular distributions of the various emission processes of the Auger type also the total electron yield, y, can be extracted from the model calculations [40]: all intrinsic angular distributions are supposed to be isotropic [12]. This implies that half of the emitted electrons is lost into the crystal.…”

Section: Model Calcultionsmentioning

confidence: 99%

“…Recent progress in the understanding of the mechanisms which ultimately lead to electron emission during the impact of Rg + ions or Rg* metastables came from two sides: (the state of knowledge up to 1988 is summarized in [8] 1. it became possible to reproduce the experimental spectra of the electrons emitted after Rg ++ [11,12], Rg + and Rg* [13,14] impact with surfaces in a qualitatively correct way in model calculations. This could be achieved by describing the time evolution of the ion-surface system during the slow approach of the particle semiclassically: each charge and excitation state of the Rg projectile taking part in the collision event is characterized by its population which is time dependent because of the intra atomic processes as well as the electronic transitions with the surface [ 11 ].…”

Section: Introductionmentioning

confidence: 98%

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Electron emission in collisions of slow rare gas ions with partially cesiated W (110)

Müller¹,

Hausmann²,

Brenten³

et al. 1993

Z Phys D - Atoms, Molecules and Clusters

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Abstract.We report the spectra of electrons emitted after slow collisions (50 eV) of rare gas ions (He +, Ne +, Ar +, and Xe +) with partially cesiated W(ll0) surfaces. The electron spectra are discussed in terms of the two interatomic Auger processes, Auger Capture and Auger Deexcitation and the intra-atomic Auger process, Autodetachment of Rg-* (He-*(1 s 2s 2 28) in the case of He). Model calculations including these processes can qualitatively reproduce the measured spectra as well as experimental values for the electron emission coefficients, 7. This is demonstrated for collisions of He + ions and thermal metastable He atoms with clean and partially cesiated W(110).

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Section: Discussionmentioning

confidence: 98%

“…Transition energies and rates are modeled in the same way as in [11,12,14]. The lifetime of He-* against autodetachment is assumed to be that of the free negative ion resonance [41].…”

Section: Model Calcultionsmentioning

confidence: 99%

Section: Model Calcultionsmentioning

confidence: 99%

Section: Model Calcultionsmentioning

confidence: 99%