Electron-electron interactions in K-shell excitation of F6+ ions in fast collisions with H2 targets

Lee, D. H.; Zouros, T. J. M.; Sanders, J. M.; Richard, Patrick

doi:10.1063/1.43723

Cited by 2 publications

(10 citation statements)

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“…Differences appear for the position of the BEP. While Lee et al [5] find that for Z ) 1 the position of the peak is independent of Z~, in the experiments of Pedersen et al [6,7] the sh.ift increases, to lower electron energies, with Zz. By applying a simple model based on ideas of Bohr and Lindhard [8], they obtained a scaling law for the shift of the BEP which is proportional to Z& .…”

Section: Introductionmentioning

confidence: 86%

“…1 we plot the experimental data from Lee et at. [5] for the 1.5 MeV/amu-H+, Fs+ + He system. In the measurements of [5] the emission angle is chosen as O'.…”

Section: A the Initial Channelmentioning

confidence: 99%

“…[5] for the 1.5 MeV/amu-H+, Fs+ + He system. In the measurements of [5] the emission angle is chosen as O'. Together with the data we plot the binary-encounter and plane-wave Born (PWBA) approximations used in [5] and the present CDW-EIS calculations.…”

Section: A the Initial Channelmentioning

confidence: 99%

“…If we consider this an impuisive process: 1 2 pz;+2v . (5) This result assumes that the electron resonant, tunneling is produced at very large internuclear distances R.…”

Section: Introductionmentioning

confidence: 99%

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Binary-encounter electron production in energetic heavy-bare-ion–atom collisions

1992

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The production of binary-encounter electrons in heavy-ionatom collisions at high impact velocities is studied. The theoretical model used is the continuum-distorted-waveeikonal-initial-state approximation. Deviations from classical predictions for the height and position of the associated peak in double-differential cross sections are determined. A simple adiabatic resonant-tunneling model is developed to interpret the physical meaning of the shift in the position of the binary-encounter peak.PACS number(s): 34.50.Fa, 34.70.+e

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Section: Introductionmentioning

confidence: 86%

“…1 we plot the experimental data from Lee et at. [5] for the 1.5 MeV/amu-H+, Fs+ + He system. In the measurements of [5] the emission angle is chosen as O'.…”

Section: A the Initial Channelmentioning

confidence: 99%

Section: A the Initial Channelmentioning

confidence: 99%

“…If we consider this an impuisive process: 1 2 pz;+2v . (5) This result assumes that the electron resonant, tunneling is produced at very large internuclear distances R.…”

Section: Introductionmentioning

confidence: 99%

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Binary-encounter electron production in energetic heavy-bare-ion–atom collisions

1992

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“…The only experiment to date demonstrating clear signs of e-e Excitation in ion-atom collisions has been the study of projectile excitation in 1-2 MeV/u collisions ofF6+ and 0 5 + with H2 and He targets [1,23). Thus, for example, in the case of the 0 5 + ions in collision with H2 targets, the following excitation channels were investigated:…”

Section: Elecfron-elecfron Excitation (Eee)mentioning

confidence: 99%

Excitation and Ionization In Fast Ion-Atom Collisions Due to Projectile — Electron — Target — Electron Interactions

Zouros

1995

Application of Particle and Laser Beams in Materials Technology

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ABSTRACf. Recent investigations of excitation and ionisation in collisions of fast highly-charged projectiles with H2 and He targets have shown that effects due to projectile-electron -targetelectron interactions can be clearly identified. The interacting electrons, traditionally assigned only a passive screening role, are now seen to acquire a new dynamic role, contributing a significant part of the excitation cross section, measuring up to 60%, as in the case of K-shell projectile ionisation at collision energies of a few Me V lu. Experimental signatures for these dynamic, twocentre e-e interactions can be found in the observation of excitation thresholds, resonances and electron exchange processes, traditionally associated with excitation of ions by free electrons.Improved applications of the Born and Impulse Approximations have been successful in accounting for the new data. A brief account of these investigations is presented.

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Electron-electron interactions in K-shell excitation of F6+ ions in fast collisions with H2 targets

Cited by 2 publications

References 1 publication

Binary-encounter electron production in energetic heavy-bare-ion–atom collisions

Binary-encounter electron production in energetic heavy-bare-ion–atom collisions

Excitation and Ionization In Fast Ion-Atom Collisions Due to Projectile — Electron — Target — Electron Interactions

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