L-subshell ionization cross sections for Au, Pb, and Bi by 60?600 keV electron impact

Pálinkás, J.; Schlenk, B.

doi:10.1007/bf01414242

Cited by 35 publications

(53 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 9 compares the present Bi L 1 , L 2 , and L 3 subshell ionization cross sections with the experimental values from Ref. [28] and the predictions of the DWBA [19,50] and SCADW formalisms [17,18,20]. Our measured cross sections are also listed in Table IV.…”

Section: Resultsmentioning

confidence: 54%

“…8 together with the measurements of Refs. [23,24,28] and the theoretical values evaluated with the DWBA ionization cross sections [19,50] and the atomic relaxation parameters of sets A and B. The experimental x-ray production cross sections and their uncertainties are summarized in Table III; the tabulated values TABLE III.…”

Section: Resultsmentioning

confidence: 99%

“…The (black) empty diamonds, (pink) squares, (green) up triangles, and (purple) down triangles represent the data from Refs. Pa80 [28], Wu10 [23], Li17A [24] (thin substrate), and Li17B [24] (thick substrate), respectively. The continuous and dashed curves indicate the theoretical DWBA results combined with atomic relaxation parameters from sets A and B, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Another consequence of the higher atomic number of 83 Bi is that the L x-ray peaks in the spectra can be better resolved by the employed spectrometer, thereby the uncertainties associated with the peak area estimates should be smaller. Finally, the existing data for Bi L are limited to either 17-40 keV [22][23][24] or 60 keV, 100 keV, and above 200 keV [25][26][27][28], and only one of these publications [28] presents absolute Bi L 1 , L 2 , and L 3 subshell ionization cross sections.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental and theoretical L -subshell ionization cross sections for 83Bi by electron impact from the L3 threshold to 100 keV

et al. 2022

View full text Add to dashboard Cite

We report experimental and theoretical Bi L 1 , L 2 , and L 3 subshell ionization cross sections by the impact of electrons with energies from the Bi L 3 ionization threshold to 100 keV. The x-ray spectra have been acquired with two Si drift detectors placed in vacuum, which allowed us to better evaluate the peak fit procedure in the L multiplet. The Lα, Lβ, Lγ , L , and Lη x-ray production cross sections, measured with relative uncertainties ranging from 5% to 9%, and two sets of atomic relaxation parameters have been used to derive the Bi L 1 , L 2 , and L 3 ionization cross sections. Although the experimental uncertainties of the subshell ionization cross sections are smaller than those of the few previous measurements, they remain large due to the uncertainties associated with the relaxation parameters. Furthermore, ionization cross sections have been calculated for the three L subshells with the subconfiguration average distorted-wave (SCADW) formalism, which includes the full two-body retarded electromagnetic interaction between the projectile and target electrons. These theoretical cross sections are 15% to 30% lower than the measured values, but the agreement is reasonable given the aforementioned high uncertainties. We have also found that the simpler distorted-wave Born approximation yields subshell ionization cross sections that match those computed with the SCADW method.

show abstract

Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and theoretical L -subshell ionization cross sections for 83Bi by electron impact from the L3 threshold to 100 keV

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In the present MC simulation, Coster-Kronig transitions are taken into account. The numbers of photons N L 1 and N L 2 emitted by a final vacancy in the L 1 -and L 2 -shell after a Coster-Kronig transition may be written as 7,32,41 …”

Section: Monte Carlo Modelingmentioning

confidence: 99%

Monte Carlo modeling of electron‐excited X‐ray emission from bulk materials and thin‐film/substrate systems

Nagatomi

2005

Surface & Interface Analysis

View full text Add to dashboard Cite

A Monte Carlo (MC) simulation model for the calculation of electron-excited X-ray spectra was developed. The model includes characteristic K-and L-lines and continuous X-ray emission by electron impact, fluorescent X-ray emission following absorption of continuous and characteristic X rays, L-line X-ray emission following K-shell ionization and Coster-Kronig transitions. The simulated spectra were directly compared with experimental spectra without any fitting parameters. This comparison revealed that continuous X-ray and K-line peak intensities can be well reproduced by the present simulation. The applications of Gryzinski's and Casnati's ionization cross sections to L-shell ionization resulted in underestimation of the L-line peak intensity by 10 to ∼30% and overestimation by 20 to ∼40%, respectively. Casnati's equation was found to be applicable to describing L-shell ionization by MC modeling when the Coster-Kronig transition was neglected.

show abstract

Electron impact ionization in K‐, L‐, and M‐shells of atomic targets

Patoary

Uddin

Haque

et al. 2011

Int J of Quantum Chemistry

View full text Add to dashboard Cite

ABSTRACT:Recently proposed extension of the empirical model (BELL) of Bell et al. (J Phys Chem Ref Data 1983, 12, 891) with incorporation of the quantum mechanical form of orbital radius from the DM model and a nonlinear feature in addition to the ionic and relativistic corrections is examined for electron-impact single ionization in the K-, L-, and M-shells of ionic and neutral atoms. This leads to the generalization of the parameters of the nonlinear form of the modified BELL (NMBELL) model in terms of the quantum numbers nl of the ionizing orbits. The generalization shows that only three species-independent fitting parameters, dependent only on the orbitals, in the NMBELL model satisfactorily reproduce the electron-impact single ionization cross sections of 42 ionic targets belonging to the He, Li, Be, B, C, O, F, Ne, Mg, Al, P, Ca, and Sc isoelectronic sequences over a wide range of energies up to 200 MeV. The NMBELL model is also found to well account for the L-and M-shell ionization of six neutral atoms up to 1 GeV.

show abstract

L-subshell ionization cross sections for Au, Pb, and Bi by 60?600 keV electron impact

Cited by 35 publications

References 9 publications

Experimental and theoretical L -subshell ionization cross sections for 83Bi by electron impact from the L3 threshold to 100 keV

Experimental and theoretical L -subshell ionization cross sections for 83Bi by electron impact from the L3 threshold to 100 keV

Monte Carlo modeling of electron‐excited X‐ray emission from bulk materials and thin‐film/substrate systems

Electron impact ionization in K‐, L‐, and M‐shells of atomic targets

Contact Info

Product

Resources

About