Al<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi></mml:math>x-ray production for incident<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>16</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>ions: The influence of target thickness effects on observed target x-ray yiel

Gray, Tom J.; Richard, Patrick; Gealy, Glenn; Newcomb, J.

doi:10.1103/physreva.19.1424

Cited by 20 publications

(2 citation statements)

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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%

“…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. The variation of x-ray yield with target thickness for heavy ion collisions was fitted to a 2-component model [16,20,22,24] for projectiles containing 0 and 1 K-shell vacancy and later a 3-component model [27][28][29][30] that describes fractions of projectiles with 0, 1, and 2 K-shell vacancies inside the target. If the solid target is thin enough and approximately single-collision conditions exist [23,24,30], the x-ray production cross section can be determined as a function of the projectile charge state.…”

Section: Introductionmentioning

confidence: 99%

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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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