Review of experimental cross sections for K-shell ionization by light ions

Paul, H.; Muhr, Johannes

doi:10.1016/0370-1573(86)90149-3

Cited by 154 publications

(61 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A host of other studies have been made ͓19,22,31,55,56͔ but the most convincing set of data for the current case was presented by Tunnel, Can, and Bhalla ͓57͔. In their study, the energy dependence of the fluorescence yield in a solid Ti target for the incident ions 1 H through 17 Cl with projectile energies 0.5-4.5 MeV/u was analyzed. For 6 C ions, K varied from 0.225 to 0.243, which is merely an 8% variation.…”

Section: Resultsmentioning

confidence: 99%

Charge-state dependence ofK-shell x-ray production in aluminum by 2–12-MeV carbon ions

Sun

Lin

et al. 1996

Phys. Rev. A

View full text Add to dashboard Cite

Charge-state dependence for K-shell x-ray production cross sections in 13 Al bombarded by 2-12-MeV 6 C ions with charge states from 2ϩ to 6ϩ was measured using a Si͑Li͒ detector. A thin Al target was used to ensure single collision conditions. Contributions of the electron capture as well as direct ionization to the inner-shell ionization were determined by an analysis of the charge-state dependence of the target x-ray production. The measurements are compared with the prediction of the ECPSSR theory using a single-hole fluorescence yield. The ECPSSR theory is based on the perturbed stationary state ͑PSS͒ formalism and relativistic effects ͑R͒ for the target electrons, and energy loss ͑E͒ and Coulomb deflection ͑C͒ of the projectile. In general, this theory gives reasonable agreement with the data for carbon ions without K vacancies while it overpredicts the data for carbon ions with K vacancies. The significant underprediction of the data at the lowest energy is likely associated with the molecular-orbital effect that is not accounted for in the ECPSSR theory.

show abstract

Section: Resultsmentioning

confidence: 99%

Charge-state dependence ofK-shell x-ray production in aluminum by 2–12-MeV carbon ions

Sun

Lin

et al. 1996

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…At rather low projectile velocities (vp « v2K) and nearly symmetric collision systems (Zp -Zt ), the molecular model [3,[7][8][9] gives a good description of K vacancy production via the promotion of electrons from the K-shell to higher orbitals. In the case of direct Coulomb excitation, the ECPSSR theory that includes corrections for the Coulomb trajectory, the relativistic effects, and projectile energy loss in the target [10], seems to reproduce the measured cross-sections quite well for many collision systems [1]. However, this theory is in serious disagreement with data from near-symmetric collision systems [11].…”

mentioning

confidence: 92%

“…[1]), while data for heavier collision systems is rather limited [2]. In this investigation we test generally accepted theories of K vacancy production for collision systems involving heavier ions.…”

mentioning

confidence: 98%

See 1 more Smart Citation

Target and projectile K x-ray production by 100, 160, and 200 MeV Nb collisions with thick solid targets

Liarokapis

Zouros

1990

J. Phys. France

View full text Add to dashboard Cite

Résumé. 2014 On donne les valeurs des sections efficaces de production de rayons-x K dans des collisions par des projectiles de K-vacancy production theories were tested over this broad range including electron promotion with vacancy sharing (molecular model), direct excitation (ECPSSR theory), modified binary encounter approximation (BEA), as well as some semi-empirical recipes. For most of the collision systems investigated the molecular model is found to be the dominant mechanism for K-vacancy production in both projectile and target. For highly asymmetric collisions, the ECPSSR calculations are found to be within a factor of two of the data for the lightest targets (C, Al), but fail for the heaviest targets.

show abstract

“…In past years, much effort has been devoted to the understanding of inner-shell ionization and excitation processes involving collisions of proton and heavy ions with neutral atoms. At present, we have widely accepted models to explain the available experimental data for such collisions quantitatively [1][2][3][4]. By contrast, comparatively little data are available for inner-shell ionization of atoms by electron impact.…”

Section: Introductionmentioning

confidence: 98%

Characteristic and non-characteristic X-ray emission from SF6 and SO2 molecules by electron impact

Shanker

Hippler

1997

Z Phys D - Atoms, Molecules and Clusters

View full text Add to dashboard Cite

Cross sections for K-shell ionization of sulphur in collisions of electrons with kinetic energies of 3.5-14.0 keV with SF 6 and SO 2 gases have been measured. In addition, the impact energy dependence of the bremsstrahlung radiation emitted at different photon energies was investigated. The experimental results are compared with theoretical calculations in plane wave Born approximation and with the available semi-empirical models.

show abstract

Review of experimental cross sections for K-shell ionization by light ions

Cited by 154 publications

References 31 publications

Charge-state dependence ofK-shell x-ray production in aluminum by 2–12-MeV carbon ions

Charge-state dependence ofK-shell x-ray production in aluminum by 2–12-MeV carbon ions

Target and projectile K x-ray production by 100, 160, and 200 MeV Nb collisions with thick solid targets

Characteristic and non-characteristic X-ray emission from SF6 and SO2 molecules by electron impact

Contact Info

Product

Resources

About