Ionization of He, Ne, Ar, Kr, and Xe by impact of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi mathvariant="normal">He</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ions

Miraglia, J. E.; Gravielle, M. S.

doi:10.1103/physreva.81.042709

Cited by 20 publications

(8 citation statements)

References 17 publications

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“…Therefore the calculation resembles the one of a bare projectile with a Coulomb parameter a P = Z eff (p)/v i, where v i is the ion velocity. The contribution of the residual potential given by the term in squared bracket is small, although larger than in the case of He + impact studied in [33].…”

Section: Theorymentioning

confidence: 70%

“…To be consistent, we consider M = 2l max + 1, where l max is the maximum angular momentum used to solve the Schrödinger equation, which in our case ranged from l max = 8 to 28, depending on E. We followed the same procedure to calculate the T-matrix elements of previous papers [33]. Summarizing, for each state characterized by the quantum numbers n and l, a target central potential was determined from the Hartree-Fock wave functions.…”

Section: Theorymentioning

confidence: 99%

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Effectiveness of projectile screening in single and multiple ionization of Ne by B2+

et al. 2011

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Pure multiple ionization cross sections of Ne by B 2+ projectiles have been measured in the energy range of 0.75 to 4.0 MeV and calculated using the continuum distorted wave-eikonal initial state approximation. The experiment and calculations show that the ionization cross sections by B 2+ , principally for the production of highly charged recoils, is strongly enhanced when compared to the bare projectile with the same charge state, He 2+ , at the same velocities.

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Section: Theorymentioning

confidence: 70%

Section: Theorymentioning

confidence: 99%

Effectiveness of projectile screening in single and multiple ionization of Ne by B2+

et al. 2011

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“…The function z P ( q ) denotes the effective projectile charge, defined as in Ref. [33], which takes into account the screening of the projectile nuclear charge produced by atomic electrons.…”

Section: Resultsmentioning

confidence: 99%

Diffraction of swift atoms after grazing scattering from metal surfaces: N/Ag(111) system

2010

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Diffraction patterns produced by grazing scattering of fast N atoms from a Ag(111) surface are investigated by employing the surface eikonal approximation. This method is a distorted-wave theory that takes into account the coherent addition of contributions coming from different projectile paths. In the model the projectile-surface potential is obtained from an accurate density-functional theory calculation. The dependence of the scattered projectile spectra on impact energy and incidence channel is analyzed, and possible incident direction and energy range for the observation of the interference patterns are predicted. In addition, it is found that as a result of the high reactivity of N atoms, asymmetries of the surface potential might be detected through their effects on diffraction patterns.

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“…The same article also presents results from a (perturbative) continuumdistorted wave with eikonal initial state (CDW-EIS) [12,13] calculation. To deal with the dressed projectile an effective charge was defined based on the momentum transfer and found through the first-order Born approximation [14]. Based on an independent-particle-model (IPM) description the method yields single-particle ionization probabilities.…”

Section: Introductionmentioning

confidence: 99%

Role of projectile electrons for target-recoil-charge-state production in intermediate-energy B2+-Ne collisions

2013

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We apply an independent electron model to study q-fold target-charge-state production in 25-600 keV/nucleon B 2+-Ne collisions for which experimental and theoretical results were published recently [W. Wolff et al.,Phys. Rev. A 84, 042704 (2011)]. The model treats projectile and target electrons using a common potential and makes use of a single-determinant wave function for the combined system. The calculated total cross sections for positive recoil ion production as well as for Ne q+ production (q = 1,. .. ,4) determined in coincidence with an unchanged projectile charge state agree well with experiment where available, i.e., in the 30-400 keV/nucleon energy range. At energies below 200 keV/nucleon the projectile electrons are shown to play a crucial role in reproducing the experimental data for q = 1,. .. ,4. For the q 2 channels the inclusion of projectile electron contributions is needed even at energies above 200 keV/nucleon in order to reproduce the experimental data. As expected, the predictions for the q = 5 recoil charge state overestimate the experimental data due to a failure of the independent electron model for this extreme channel.

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Ionization of He, Ne, Ar, Kr, and Xe by impact ofHe+ions

Cited by 20 publications

References 17 publications

Effectiveness of projectile screening in single and multiple ionization of Ne by B2+

Effectiveness of projectile screening in single and multiple ionization of Ne by B2+

Diffraction of swift atoms after grazing scattering from metal surfaces: N/Ag(111) system

Role of projectile electrons for target-recoil-charge-state production in intermediate-energy B2+-Ne collisions

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