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

Warczak, A.; Liesen, D.; MacDonald, J.; Mokler, P. H.

doi:10.1007/bf01408232

Cited by 19 publications

(4 citation statements)

References 20 publications

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“…A deviation of the same kind has been observed by other authors: e.g. Warczak et al [14] for Cu on Kr, Schmidt-B/Scking et al [9] for Ar on Ar, Schuch et al [10] for Kr on Kr and Xe on Xe.…”

Section: Gas Target Collision Systemssupporting

confidence: 52%

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Systematic study of impact parameter dependent K-vacancy probabilities in near symmetric gas- and solid-target collision systems

et al. 1984

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K-vacancy production probabilities Pro(b) were measured with gas and solid targets by K-x-ray particle coincidences (impact parameter b is determined by the particle the PK(b) from solid targets are strongly influenced by a multiple collision effect, where projectile L-vacancies seem to be produced in collisions before K-vacancy production. However, this effect cannot be understood just by a two collision process where Lvacancy production and 2p~-2pa rotational coupling occurs in consecutive collisions.

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Section: Gas Target Collision Systemssupporting

confidence: 52%

“…In numerous measurements of PK(b) and total cross sections cr it could be clearly shown (see e.g. [7][8][9][10][11][12][13][14]) that both increase with an increasing number of projectile L-vacancies.…”

Section: Introductionmentioning

confidence: 99%

Systematic study of impact parameter dependent K-vacancy probabilities in near symmetric gas- and solid-target collision systems

et al. 1984

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“…Based on the preceding physical process and the procedure presented by Warczak et al [19], the fraction of vacancies N(q) in the 4f MO, which qualitatively reflects Nb L-shell ionization cross sections variation tendency, can be expressed as N(q) ϭ cq 4d (q)W(q) (2) where c is a statistical factor, denoting the number ratio of the 4d to 4d orbitals; W(q) describes the 4d-4f transition probability. According to Lennard et al [17],…”

Section: Resultsmentioning

confidence: 99%

Double effects of projectile charge state on Nb L-shell ionization by slow highly ionized Xe ions

Guo¹,

Yang²,

Zhang³

et al. 2015

Can. J. Phys.

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Nb L-shell ionization cross sections induced by Xe q+ (12 ≤ q ≤ 29) ions were measured as a function of the incident charge state q in the energy ranging from 1500 to 2500 keV. In this experiment, we observed a new dependence phenomenon that ionization cross sections revealed an increasing first and then decreasing trend with increasing q, which is different from the previously reported charge state-dependent behavior. New results are interpreted as evidence of charge state double effects on the inner-shell ionization in ion-solid collisions. PACS Nos.: 34.90.+q, 34.35.+a. Résumé :Les sections efficaces d'ionisation du Nb dans la couche L induite par des ions Xe q+ (12 ≤ q ≤ 29) sont mesurées ici en fonction de l'état de charge q pour des énergies allant de 1500 à 2500 keV. Cette expérience fait ressortir une nouvelle tendance, différente de ce qui a été rapporté antérieurement, que la section efficace d'ionisation augmente d'abord pour ensuite décroître à mesure que q augmente. Ces nouveaux résultats sont interprétés comme une évidence d'un double effet de l'état de charge q sur l'ionisation des couches profondes dans les collisions ions-solides. [Traduit par la Rédaction]

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“…However, the correlation diagram and the relevant calculations are not available at this point. In a similar measurement the K XRP was studied [19] using 1.4 MeV/u Cu ions. The K-shell ionization cross sections were derived from the measured K XRP and fluorescence yield value.…”

Section: Charge State Dependence Of the Target K X-ray Cross Section:...mentioning

confidence: 99%

Saturation effect in projectile- and target- x-ray production in collisions between 2.5 MeV/u highly charged Cu ions and gaseous targets

Kumar

Misra

Kelkar

et al. 2005

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

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L x-ray production cross sections have been measured for highly charged 2.5 MeV/u Cuq+ (q = 20–26) ions colliding with H2, Ne, Ar, Kr and Xe target atoms. The observed Cu L x-rays are due to the excitation and electron-transfer processes. The charge state dependence of the projectile L x-rays has been studied with Ar and Kr targets. We have derived the subshell resolved K-L1, K-L2 and K-L3 electron-transfer cross sections from the measured Ar K x-ray yields as a function of L vacancies in Cu ion. The measured projectile L x-ray production cross sections arising from the excitation and electron capture are found to saturate as target atomic number Zt increases. Similarly, a saturation has also been found in the Ar K-shell ionization cross sections as a function of Zp.

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

Cited by 19 publications

References 20 publications

Systematic study of impact parameter dependent K-vacancy probabilities in near symmetric gas- and solid-target collision systems

Systematic study of impact parameter dependent K-vacancy probabilities in near symmetric gas- and solid-target collision systems

Double effects of projectile charge state on Nb L-shell ionization by slow highly ionized Xe ions

Saturation effect in projectile- and target- x-ray production in collisions between 2.5 MeV/u highly charged Cu ions and gaseous targets

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