Dynamic Screening of Projectile Charges in Solids Measured by Target X-Ray Emission

Brandt, Werner; Laubert, R.; Mourino, Manuel; Schwarzschild, A.

doi:10.1103/physrevlett.30.358

Cited by 79 publications

(34 citation statements)

References 9 publications

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“…This behaviour was confirmed by bombarding targets of different thicknesses (8,30, 100 gg/cm 2) with Ne ions with energies of 9 and 18 MeV.…”

Section: Discussion Of the Datasupporting

confidence: 56%

“…The interpretations cited above are based on a sequence of binary collisions. They are contrasted by a collective model given by Brandt et al [8] which describes the target (aluminium) K-xray yield as a function of the target thickness, projectile (oxygen) energy and charge as a dynamic response of the electron gas in the target in the presence of a fast charged ion. The spectroscopy of the projectile radiation provides complementary results.…”

Section: Introductionmentioning

confidence: 99%

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Charge-state distributions and the population of x-ray emitting states

1979

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The population of excited states of neon projectiles has been deduced from highresolution x-ray spectra. From the comparison of the satellite and the hypersatellite spectrum we conclude that the population of the outer shells is insensitive to the presence of either one or two K-shell vacancies. On the basis of a model of independent electrons the population distribution including states with filled K-shell can be estimated. The deduced mean charge states compare rather well with results obtained from beam analysis over a projectile energy range from 5 to 18 MeV.

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“…This behaviour was confirmed by bombarding targets of different thicknesses (8,30, 100 gg/cm 2) with Ne ions with energies of 9 and 18 MeV.…”

Section: Discussion Of the Datasupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Charge-state distributions and the population of x-ray emitting states

1979

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“…A rigorous treatment would have to include nonlinear screening and would require knowledge of cross sections for multiple electron capture processes. Since none of the above is well known at this time, we assume that deexcitation of hollow atoms in a solid follows an exponential decay from the initial configuration with a charge state q i to the equilibrium charge state q eq [20]. The relaxation into charge state equilibrium is then given by q͑x͒ q eq 1 ͑q i 2 q eq ͒e 2a͑x͞y͒ .…”

mentioning

confidence: 99%

Charge Equilibration Time of Slow, Highly Charged Ions in Solids

et al. 1999

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We report observations of nonequilibrium charge state distributions of slow, highly charged ͑331 # q # 751͒ ions after transmission of thin carbon foils. Charge equilibration times are determined directly from the dependencies of exit charge states on projectile velocity ͑0.5 3 10 6 , y , 10 6 m͞s͒ and foil thickness (5 -10 nm). Ions like Xe 441 and Au 681 are found to equilibrate inside of solid matter in a time of only 7 fs. [S0031-9007(99)09368-0]

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“…Metals were chosen as targets because the following properties made them well suited for our experiments: 1. This is essential for a comparison be- [38,39]. 2.…”

Section: Choice Of Targets and Experimental Set-upmentioning

confidence: 99%

Measurement of the muonic x-ray cascade in Mg, AI, In, Ho, and Au

et al. 1982

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The muonic x-ray cascades in metallic targets of Mg, A1, In, Ho, and Au have been measured with Ge detectors. X-ray intensities from levels with principal quantum numbers up to n=15 were determined. Radiative Coulomb capture of muons to low lying levels was searched for but not found. The experimental intensities could be reproduced by cascade calculations starting at n=20 with properly chosen initial angular momentum distributions, either modified statistical or -in the case of Holinear. The electronic K refilling rates for Mg and A1 were found to be roughly only one third of the refilling rates for a K hole in an ordinary atom. The full refilling rate, however, is adequate for the heavier elements.

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Dynamic Screening of Projectile Charges in Solids Measured by Target X-Ray Emission

Cited by 79 publications

References 9 publications

Charge-state distributions and the population of x-ray emitting states

Charge-state distributions and the population of x-ray emitting states

Charge Equilibration Time of Slow, Highly Charged Ions in Solids

Measurement of the muonic x-ray cascade in Mg, AI, In, Ho, and Au

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