Tables for plane-wave Born-approximation calculations of K- and L-shell ionization by protons

Benka, O.; Kropf, Allen

doi:10.1016/0092-640x(78)90015-3

Cited by 115 publications

(10 citation statements)

References 6 publications

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“…This fact means that, as pointed out by Paul, 13 it is not good to use the Brandt-Lapicki relativistic correction method for the nonrelativistic values with exact integration limits, (j EPWBA , such as the tabulated values of Benka and Kopf. 12 In order to calculate the ECPSSR cross sections, we should use the values taken from the universal tables 2-6 and modify them with all the corrections including the energyloss effect. The computer programs for the ECPSSR cross sections should also be written in this way, i.e.…”

Section: Resultsmentioning

confidence: 99%

“…They used the exact integration limits in the PWBA theory and calculated the ionization cross sections with the Brandt-Lapicki relativistic correction. This corresponds to use the Benka-Kopf table 12 together with the Brandt-Lapicki relativistic correction and leads to the values similar to those tabulated by Cohen and Harrigan. 9 It is the purpose of the present work to test the energy-loss correction method proposed by Brandt and Lapicki for K-shell ionization cross sections by charged particles in the nonrelativistic and relativistic cases.…”

Section: Introductionmentioning

confidence: 80%

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Energy-Loss Effect in K-Shell Ionization

Mukoyama

1998

Int. J. PIXE

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The energy-loss effect of the projectile for direct inner-shell ionization cross sections by charged-particle impact has been examined. The relativistic and nonrelativistic calculations for K-shell ionization with and without the energy-loss effect are made in the plane-wave Born approximation and compared with the Brandt-Lapicki theory for the corrections of the relativistic and energy-loss effect. It is demonstrated that the Brandt-Lapicki method gives a good approximation to both relativistic and nonrelativistic cross sections, which implicitly take into account the energy-loss effect. However, the use of the Brandt-Lapicki relativistic correction method in the nonrelativistic theory with the exact integration limits for energy and momentum transfer overestimates the relativistic calculations for low-energy projectiles. This indicates that the Brandt-Lapicki method for correction of the electronic relativistic effect should be used only with their energy-loss correction method.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 80%

Energy-Loss Effect in K-Shell Ionization

Mukoyama

1998

Int. J. PIXE

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“…proton excitation cross sections from Benka and Kropf (1978), the calculated emission rate factor is equal to 5 ϫ 10 Ϫ23 ph/sec for C 277 eV. This extremely low factor is not Feldman et al 1975;McComas et al 1992).…”

Section: ϫ16mentioning

confidence: 89%

“…Then, 2k 1 /k 2 ϭ 2n i1 E 1 /n i2 E 2 can be calcusections are extremely low, 2.5 ϫ 10 Ϫ28 and 5 ϫ 10 Ϫ30 cm 2 , lated. Here, n i is the imaginary part of the refractive index respectively (Benka and Kropf 1978). Photon yields Ͳ ϭ which may be calculated using a method described in 2.8 ϫ 10 Ϫ3 and 8.3 ϫ 10 Ϫ3 (Krause 1979) are involved in Henke et al (1982).…”

Section: Solar-wind Protons and Cometary Ionsmentioning

confidence: 99%

On the Nature of Soft X-Ray Radiation in Comets

Krasnopolsky

1997

Icarus

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“…ECPSSR can reproduce L i ‐shell cross‐sections better than other available theories,34, 35 even if it shows deviations below the MeV range 36. The analytical model available for the calculation of L i ‐shell ionisation cross‐sections follows calculations based on the work of Liu and Cipolla,37 while Benka and Kropf's38 calculations have been used to calculate the reduced universal cross‐sectional function.…”

Section: K‐ and Li‐shell Ionisation Cross‐sectional Modelsmentioning

confidence: 99%

PIXE simulation in Geant4

et al. 2011

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Geant4 is a general purpose and open source C + + Monte Carlo simulation toolkit, widely used in the scientific community. It is able to simulate physical interactions of particles through matter. According to the user's needs, models for the simulation of electromagnetic (EM) interactions are provided in two Geant4 subpackages, the 'standard' EM subpackage, well suited for a wide range of applications and the 'low-energy' EM subpackage, able to reach the electronVolt regime. Particle-induced X-ray emission (PIXE) is a well known and a very useful technique for quantitative elemental analysis in environmental, archaeological, biological, medical and space applications. An atomic de-excitation module is part of the Geant4 'low-energy' EM subpackage since 1999 and has been validated in recent years. PIXE simulation has been included in this subpackage in 2001 and new ionisation cross-sectional models following the ECPSSR theory have been added for the PIXE simulation in 2008. In 2010, these models have been further extended to higher energies. In this work, we present new results on the verification of these models and an overview of the new interface to PIXE modelling prepared for the recent public release of the Geant4 toolkit (December 2010) allowing a unified usage of the Geant4 de-excitation module by both 'standard' and 'low-energy' subpackages. Copyright © 2011 John Wiley & Sons, Ltd

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Tables for plane-wave Born-approximation calculations of K- and L-shell ionization by protons

Cited by 115 publications

References 6 publications

Energy-Loss Effect in K-Shell Ionization

Energy-Loss Effect in K-Shell Ionization

On the Nature of Soft X-Ray Radiation in Comets

PIXE simulation in Geant4

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