Charge dependence of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi></mml:math>x-ray production in nearly symmetric collisions of highly ionized S and Cl ions in gases

MacDonald, J.; Brown, M. D.; Czuchlewski, S. J.; Winters, Loren M.; Laubert, R.; Sellin, I. A.; Mowat, J. R.

doi:10.1103/physreva.14.1997

Cited by 25 publications

(3 citation statements)

References 22 publications

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“…O-2p~--N-O'ro t (1) where 0"ro t describes the 2prc-2po-rotational coupling cross section and N is the fraction of vacancies in the 2prc~ MO [18]. For the Cu+q+Kr collision system O2p ~ is extracted from the experimental data given in Figure 2 by …”

Section: Discussionmentioning

confidence: 99%

Charge state dependence of characteristic x-ray emission under single collision conditions for 1.4 MeV/amu Cu ions

et al. 1978

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Section: Discussionmentioning

confidence: 99%

Charge state dependence of characteristic x-ray emission under single collision conditions for 1.4 MeV/amu Cu ions

et al. 1978

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“…They also measured the 'effective' K-shell x-ray production of Al targets with varied thicknesses ranging from 0.5 to 25 µg cm −2 to study ion charge state effects for different target thicknesses. These studies stimulated interest in the charge state dependence of heavy ions as a function of target thickness [8,10,16,[18][19][20][21][22][23][24][25][26][27][28]. In the work by Betz et al [10] the rates of vacancy production, charge exchange and quenching for the projectile moving inside the solid target were included.…”

Section: Introductionmentioning

confidence: 99%

Charge state dependence of copper L-shell x-ray production by 4 - 14 MeV oxygen ions

Azordegan

Sun

et al. 1997

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

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Charge state dependence of L-shell x-ray production cross sections in bombarded by 4 - 14 MeV ions with charge states from q = 3+ to 8+ was measured using a Si(Li) x-ray detector with a resolution of 96 eV at 1 keV. An ultra-thin copper foil was used to ensure single-collision conditions. The data for the total L x-ray production cross sections are compared to the predictions of the first Born and the ECPSSR calculations for L-shell ionization converted to x-ray production cross sections using a single-hole fluorescence yield. Except at the lowest projectile velocity, the ECPSSR theory gives satisfactory agreement with the data while the first Born theory overpredicts all the data in the investigated energy range by almost two orders of magnitude. Measurements of the charge state dependence of the target L-shell x-ray production cross sections allowed the separate contributions of the electron capture (EC) and the direct ionization (DI) to the inner-shell ionization to be determined. The EC contributions were extracted from the x-ray measurements with two, one, and no K-shell vacancies in the oxygen ions. These EC cross sections are compared with the results of an OBK approximation and the ECPSSR theory, and found to be significantly smaller than both EC calculations.

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“…In 1976, Macdonald et al. [11] studied the dependence of K-shell x-ray production in nearly symmetric collisions for highly ionized S and Cl ions in gases. Their EC data as well as data that were reported subsequently in Refs.…”

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Charge-state dependence ofM-shell x-ray production inHo67by 2–12-MeV carbon ions

Sun

Duggan

et al. 1995

Phys. Rev. A

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carbon ions, with and without K-shell vacancies, were measured using a windowless Si(Li) x-ray detector with a full-width-at-half-maximum resolution of 135 eV at 5.9 keV. Carbon ions of different charge states were produced using a postacceleration, nitrogen gas stripping cell. The carbon ions were then magnetically analyzed to select the desired charge state and energy before entering the target chamber. The total M-shell and Ms, Mn, P, and M y x-ray cross sections were measured. The electron-capture (EC) contributions as well as the direct-ionization (DI) contributions can be determined by making a comprehensive study of the projectilecharge-state dependence of the target x-ray production cross sections for targets in which the single-collision realm is maintained. In this paper, both EC and DI contributions and the total M-shell x-ray production cross sections are compared to both the first Born theory and to the perturbed-stationary-state theory with energyloss, Coulomb-deflection, and relativistic corrections. PACS number(s): 34.70.+e, 34.50.Fa

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Charge dependence ofKx-ray production in nearly symmetric collisions of highly ionized S and Cl ions in gases

Cited by 25 publications

References 22 publications

Charge state dependence of characteristic x-ray emission under single collision conditions for 1.4 MeV/amu Cu ions

Charge state dependence of characteristic x-ray emission under single collision conditions for 1.4 MeV/amu Cu ions

Charge state dependence of copper L-shell x-ray production by 4 - 14 MeV oxygen ions

Charge-state dependence ofM-shell x-ray production inHo67by 2–12-MeV carbon ions

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