<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi></mml:math>x-ray production in single collisions of chlorine and sulfur ions

Winters, Loren M.; Brown,; Ellsworth, L. D.; Chiao, T.; Pettus, E. W.; MacDonald, J.

doi:10.1103/physreva.11.174

Cited by 50 publications

(5 citation statements)

References 33 publications

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“…The calculations are normalized such that S a = 1.0 for 20 Ne(d, 6 Li) 16 O at E d = 35 MeV.^9 As anticipated, the S a values show the same odd-even variation as observed in the cross-section data. While finite-range and other effects may slightly alter the results obtained One of the interesting aspects of the passage of ions through solids is the possibility of residual excitation in the electronic orbitals of the projec-with the above DWBA calculations and hence the absolute S a values , 8 they are not expected to change the systematic features shown in Fig. 3.…”

mentioning

confidence: 82%

Evidence for ResidualK-Shell Excitation in Chlorine Ions Penetrating Carbon

Hopkins

1975

Phys. Rev. Lett.

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0.6 h 0.4 k 116 117 118 119 120 At FIG. 3. a -particle spectroscopic factors for Sn(d, 6 Li)Cd (g.s.) normalized such that S a =1.0 for 20 Ne(rf, 6 Li) 16 0 (g.s.) at ^ = 35 MeV (Ref. 8).Quantum beats have been observed in both linear-and circular-polarized light using a beam-tilted-foil geometry for the 3s z S-3p*P transition of u Niv. Beats between the F~ 0 and F=l hyperfine levels-forbidden in the case of excitation by untilted foils~~were observed. A value of .4=695 ± 15 MHz was obtained for the hyperfine coupling constant of the upper term.

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confidence: 82%

Evidence for ResidualK-Shell Excitation in Chlorine Ions Penetrating Carbon

Hopkins

1975

Phys. Rev. Lett.

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“…It has been observed that the target K-shell ionization cross sections increase with the projectile charge state, the rate of increase being larger when the projectile has two or less electrons [8,21], and for near symmetric collisions [22]. Two main factors may be responsible for this dependence which is still not fully understood: a reduced screening of the projectile for higher charge states and transfer to the projectile of target K-shell electrons.…”

Section: Cross Sectionsmentioning

confidence: 97%

“…There is no direct measurement of the charge-state effect for the systems studied here; nevertheless an estimation can be made from known results. By extrapolation of the results obtained with S and CI projectiles on targets ranging from Ne to Ar [22], the increase in the cross sections due to charge state effects can be estimated to be by a factor of only about 2.…”

Section: Cross Sectionsmentioning

confidence: 98%

Inner-shell ionization ofZ=25?32 elements by 5-48 MeV32S ions

et al. 1976

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The K-shell ionization cross sections of Mn, Ni, Cu, Zn and Ge under 328 bombardment have been measured in the energy range from 5 to 48 MeV. The cross sections are compared with available theories based on a direct Coulomb ionization mechanism and with the predictions of the K-vacancy sharing process. This last process can reasonably account for the measured cross sections at high bombarding energies. The energy shifts of the K-and K~-lines and the KJK~-intensity ratios have also been measured. This information is used to deduce the defect configuration of the atoms. The mechanisms responsible for the multiple vacancy production are discussed.

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“…Following momentum analysis they were passed through thin (10-20gg/cm 2) C foils and pure charge states were magnetically selected and focussed through a double differentially pumped gas cell apparatus [6]. A Si(Li)-detector with an active area of 80 mm 2 and a 0.0125ram Be entrance window was used detect the target (Ar) K and the Cu L x-rays.…”

Section: Methodsmentioning

confidence: 99%

ArK x-ray production cross sections in collisions with highly ionized Cu at 50?70 MeV

Schiebel

Doyle

1978

Z Physik A

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The projectile charge state dependence of Ar K x-ray production in collisions with Cu 11 § through Cu22+ions has been investigated at ~1 MeV/amu. A distinct change in the behaviour of the cross section as a function of charge state q was observed for q> 19 where CuL shell vacancies are brought into the collision. The assumption that the vacancy production is predominantly due to 2pa-2pn electron promotion via rotational coupling leads to a consistent description of the data.

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Kx-ray production in single collisions of chlorine and sulfur ions

Cited by 50 publications

References 33 publications

Evidence for ResidualK-Shell Excitation in Chlorine Ions Penetrating Carbon

Evidence for ResidualK-Shell Excitation in Chlorine Ions Penetrating Carbon

Inner-shell ionization ofZ=25?32 elements by 5-48 MeV32S ions

ArK x-ray production cross sections in collisions with highly ionized Cu at 50?70 MeV

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