Calculation of Absolute Outer‐Shell Electron Impact Ionization Cross Sections

Deutsch, Hans‐Peter; Märk, T.D.

doi:10.1002/ctpp.2150340104

Cited by 11 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These expectations values may be interesting for the calculations of ionization cross sections from analytic expressions, such as ones derived in references [31,32]. Figure 7 shows that the plasma density has no influence on r and E nl bin for subshells deeper than 4p.…”

Section: Influence Of Plasma Density On Radiative Recombination Cross...mentioning

confidence: 77%

Influence of plasma density on radiative recombination cross sections of oxygen ions

Ribière¹

2022

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

Radiative recombination cross sections of oxygen ions from O+ to O6+ are calculated by an atomic model assuming central field and Hartree-Fock-Slater approximation for exchange potential. The recombining ions are considered on their ground states, to form recombined ions on their ground states as well as on several subshells up to 4d. The effect of plasma density on the cross sections is taken into account by varying the Wigner-Seitz cell representing the atomic volume containing bound and free electrons. It is shown that the increase of plasma density significantly enhances the cross sections involving excited states of the recombined ions at atmospheric pressures and beyond. These cross sections may be used in collisional-radiative models for fully ionized plasma simulations in the frame work of, for example, switches in Marx generator and laser-induced plasmas in air.

show abstract

Section: Influence Of Plasma Density On Radiative Recombination Cross...mentioning

confidence: 77%

Influence of plasma density on radiative recombination cross sections of oxygen ions

Ribière¹

2022

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…[11] The semi-classical Deulsch-Mark (DM) formula was originally developed for using in plasma modelling applications and aiming at a description of atomic ionization cross sections in the energy range from threshold to 100 eV, that the energy dependence was described in terms of a Gryzinsky-type expression. [12] To improve the behaviour in the region of high impact energies, the modified DM formula was introduced, which is an easy-to-use formula to calculate atomic ionization cross sections for the entire range of impact energies from threshold to the high-energy region, and it is successful for many light elements such as F, P, Ar, Si and Na. [13−16] In the modified DM method, the fitting parameters are only from experimental data of light atoms H, He, C, Ne, Mg, Al, and Ag, correspondingly, the parameters for subshells 1s, 2s, 2p, 3s and 3p are more accurate.…”

Section: Introductionmentioning

confidence: 99%

Calculated cross sections for the single ionization of atoms (N, Cu, As, Se, Sn, Sb, Te, I, Pb) by electron impact

2009

View full text Add to dashboard Cite

By correcting some primary parameters in the semi-classical Deutsch-Märk (DM) formula, this paper calculates the absolute single electron-impact ionization cross sections of atoms N, Cu, As, Se, Sn, Sb, Te, I and Pb from threshold to 10000 eV. The calculated cross sections are compared with available experimental data and other theoretical results. An excellent agreement was achieved between the calculated and measured cross sections for these atoms over a wide range of impact energies.

show abstract

“…Xenon inner-shell electron impact ionization is included [6,7]. The calculations reproduce the vacancy cascade-decay process of the residual ions, which involves the emission of AugerKoster-Kronig and shake-off electrons and x-ray fluorescence.…”

Section: Introduc~onmentioning

confidence: 99%

Absorption of electrons in xenon for energies up to 200 keV: a Monte Carlo simulation study

Rachinhas

Dias²,

Santos³

et al. 1999

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

Gas proportional scintillation counters are roomtemperature, general-purpose x-ray detectors, which are used in many applications due to their good energy resolution, which can be better than standard proportional counters by a factor of -2. However, for energies higher than -20 keV, the experimentally measured energy resolution is found to deviate from the usual 1 d E law. Under these circumstances, it is of great interest to understand the mechanisms involved in the detection of higher energy x-rays. Since the photoelectrons will then carry most of the absorbed energy, we study in this work the response of xenon detectors, to electrons with energies up to -200 keV, using a Monte Carlo simulation technique. Distributions of the number of primary (subionization) electrons produced per parent electrons with energy E, are calculated, and results are presented for the Fano factor, the w-value and the intrinsic energy resolution as a function of E, in the range 20-200 keV. The influence of an applied reduced electric field on the results is assessed, showing that for 200 keV electrons an increase in the field from 0.1 to 0.8 Td causes an increase as high as 35% in the intrinsic energy resolution.

show abstract

Calculation of Absolute Outer‐Shell Electron Impact Ionization Cross Sections

Cited by 11 publications

References 26 publications

Influence of plasma density on radiative recombination cross sections of oxygen ions

Influence of plasma density on radiative recombination cross sections of oxygen ions

Calculated cross sections for the single ionization of atoms (N, Cu, As, Se, Sn, Sb, Te, I, Pb) by electron impact

Absorption of electrons in xenon for energies up to 200 keV: a Monte Carlo simulation study

Contact Info

Product

Resources

About