Screening and antiscreening by projectile electrons in high-velocity atomic collisions

McGuire, J. H.; Stolterfoht, N.; Simony, P. R.

doi:10.1103/physreva.24.97

Cited by 159 publications

(66 citation statements)

References 21 publications

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“…Driven by the motivation mentioned above, numerous theoretical (see e.g. McGuire et al (1981); Hippler et al (1987); Lee et al (1992); Fiol et al (2001)) as well as experimental studies have been reported in the literature. A first experimental identification of the (e,e) contribution by exploited its threshold behavior by measuring the velocity dependence of total projectile ionisation cross sections.…”

Section: Projectile-ionisation: a Novel Approach To (E2e)-experimentmentioning

confidence: 99%

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

et al. 2003

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Recoil-ion and electron momentum spectroscopy is a rapidly developing technique that allows one to measure the vector momenta of several ions and electrons resulting from atomic or molecular fragmentation. In a unique combination, large solid angles close to π Microccopes -the "bubble chambers of atomic physics" -mark the decisive step forward to investigate many-particle quantum-dynamics occurring when atomic and molecular systems or even surfaces and solids are exposed to time-dependent external electromagnetic fields.The present review concentrates on just these latest technical developments and on at least four new classes of fragmentation experiments that have emerged within about the last five years. First, multi-dimensional images in momentum space brought unprecedented information on the dynamics of single-photon induced fragmentation of fixed-in-space molecules and on their structure. Second, a break-through in the investigation of highintensity short-pulse laser induced fragmentation of atoms and molecules has been achieved by using Reaction Microccopes. Third, for electron and ion-impact, the investigation of twoelectron reactions has matured to a state such that first fully differential cross sections (FDCS) are reported. Forth, comprehensive sets of FDCS for single ionisation of atoms by ion-impact, the most basic atomic fragmentation reaction, brought new insight, a couple of surprises and unexpected challenges to theory at keV to GeV collision energies. In addition, a brief summary on the kinematics is provided at the beginning. Finally, the rich future potential of the method is shortly envisaged.2

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Section: Projectile-ionisation: a Novel Approach To (E2e)-experimentmentioning

confidence: 99%

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

et al. 2003

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“…Two kind of time orders are possible; the corresponding probabilities are (15) (ionization followed by capture), and (16) (capture followed by ionization). We symmetrize the probabilities by taking the average of P (1) and P (2) . In a similar way, the time order of the different processes was taken into account in deriving the probabilities of higher ionization degrees with and without assuming single electron capture.…”

Section: B Simplified Nctmc Modelmentioning

confidence: 99%

“…Theoretical and experimental investigations of the screening effect in ion-atom collisions have led to some surprising results [2][3][4][5]. At first glance, one would expect that the cross sections of the collision processes, as compared to the case of bare ion projectiles, are smaller for the impact of partially stripped ions due to the weaker screened Coulomb potential.…”

Section: Introductionmentioning

confidence: 99%

Multiple ionization of rare gases by hydrogen-atom impact

et al. 2013

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Cross sections for the multiple ionization of He, Ne, Ar, and Kr by H 0 impact with and without the simultaneous ionization (electron loss) of the projectile are presented in the energy range 75-300 keV. The data were measured by coincident detection of the recoil target ions and the charge-state analyzed scattered projectiles. To obtain information about the role played by the electron of H 0 in the collision, the measurements were repeated with protons under the same experimental conditions. The measured data are analyzed using the classical trajectory Monte Carlo (CTMC) method. CTMC describes well the experimental data for both projectiles for single vacancy creation; however, increasing deviation is observed between theory and experiment with increasing number of created vacancies and with decreasing target atomic number.

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“…The basic processes responsible for the slowing down of fast heavy ions in matter are qualitatively understood [1][2][3][4][5][6], but the interest in this problem remains alive for at least two reasons. Ions with velocity v proceed in the solid having, at least temporarily, bound electrons [7][8][9][10][11], even if v > Ζ m, and the distribution of charge is not completely predicted.…”

Section: Introductionmentioning

confidence: 99%

Effective Ion Charge

Moneta

1996

Acta Phys. Pol. A

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The impact parameter dependent energy transfer and random stopping power for ions carrying electrons were determined within the first-order Born approximation. The ion and atom were described by many-electron ground states. The excitations and ionizations of both collision partners were taken into account, but exchange of electrons was neglected. With the Bethe sum rule and closure relation, the random stopping was shown to have the Bethe form. For the Moliere form factors the anaJytical results were obtained. The effective charge was discussed in the random and channelling conditions. Comparison with some previous calculations was carried out.

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Screening and antiscreening by projectile electrons in high-velocity atomic collisions

Cited by 159 publications

References 21 publications

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

Multiple ionization of rare gases by hydrogen-atom impact

Effective Ion Charge

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