Electron impact ionization close to the threshold: classical calculations

Sattin, F.; Katsonis, K.

doi:10.1088/0953-4075/36/3/101

Cited by 2 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within the proposed mechanism, all the electrons are active electrons while previously only n atomic electrons were included in an analysis [32,33] within a statistical energy deposition model [34]. It also differs from the most recent classical trajectories Monte Carlo calculations [35], where only single and double electron impact ionization was considered and multielectron effects were included only within a rather crude two-electron model. In contrast to the previous schemes, the present resonant mechanism cannot operate at all if the atom has only n electrons.…”

Section: Summary and Discussionmentioning

confidence: 99%

Secondary threshold laws for multiple ionization of atoms

Gribakin¹,

Sahoo²,

Ostrovsky³

2004

Phys. Rev. A

View full text Add to dashboard Cite

We propose a physical mechanism that leads to the emergence of secondary threshold laws in processes of multiple ionization of atoms. We argue that the removal of n electrons ͑n Ͼ 2͒ from a many-electron atom may proceed via intermediate resonant states of the corresponding doubly charged ion. For atoms such as rare gases, the density of such resonances in the vicinity of subsequent ionization thresholds is high. As a result, the appearance energies for multiply charged ions are close to these thresholds, while the effective power indices in the near-threshold energy dependence of the cross section, ϰ E , are lower compared to those from the Wannier theory. This provides a possible explanation of the recent experimental results of B. Gstir et al. [Nucl.

show abstract

Section: Summary and Discussionmentioning

confidence: 99%

Secondary threshold laws for multiple ionization of atoms

Gribakin¹,

Sahoo²,

Ostrovsky³

2004

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…Lately, these quasiclassical formulas were extended after performing numerical solutions of the few body problem in the Classical Trajectory Monte Carlo (CTMC) approximation [14,15]. The low energy asymptotic values of excitation cross sections given by these formulas have been proved conformal to the low-energy variation laws (see, e.g., [16]). In the high-energy region, the energy variation is conformal to the Born approximation, which is also valid for our DW and FOMBT results.…”

Section: Atomic Data Evaluationmentioning

confidence: 99%

Argon 4sand 4pExcited States Atomic Data Applied in ARC-JET Modeling

Katsonis

Berenguer

Kaminska

et al. 2011

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

Evaluated atomic data concerning the 4sand 4pconfigurations of Ar I are averaged in order to simplify their use in various cases of Ar plasma modeling and diagnostics. These data are used here to model a low-power arcjet, running with Argon at low pressure. In so doing, they are explicitly introduced in the chemical processes included in a fluid Navier-Stokes type code, allowing for evaluation of the spectroscopically measurable level populations and of the electronic temperatures. The characteristics of the model are described and the main processes are discussed in view of the results of the calculations.

show abstract

Electron impact ionization close to the threshold: classical calculations

Cited by 2 publications

References 19 publications

Secondary threshold laws for multiple ionization of atoms

Secondary threshold laws for multiple ionization of atoms

Argon 4sand 4pExcited States Atomic Data Applied in ARC-JET Modeling

Contact Info

Product

Resources

About