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Datz, S.; Hippler, R.; Andersen, Lars H.; Dittner, P.F.; Knudsen, H.; Krause, H. F.; Miller, P.D.; Pepmiller, P.L.; Rosseel, Thomas M.; Schuch, R.; Stolterfoht, N.; Yamazaki, Y.; Vane, C. R.

doi:10.1103/physreva.41.3559

Cited by 63 publications

(28 citation statements)

References 39 publications

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“…According to the Bohr-Lindhard model, one-electron release probability f r and capture probability f c are f r = (v e /a)(R r /v p ) and f c = (v e /a)(R c /v p ), respectively. Here, the unitarized probabilities p r and p c are used, which are given as [16,17]:…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

Direct ionization of helium by low and intermediate Cq+ and Oq+ (q=1–4) ions

Bao-Wei

Chen

et al. 2008

International Journal of Mass Spectrometry

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Section: Results Discussion and Conclusionmentioning

confidence: 99%

Direct ionization of helium by low and intermediate Cq+ and Oq+ (q=1–4) ions

Bao-Wei

Chen

et al. 2008

International Journal of Mass Spectrometry

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“…Such deviations are also observed in systematic measurement where fast (3.6 MeV/u ∼ 1 GeV/u) and highly charged (q = 24 ∼ 92) ions are used [14]. As stated by previous authors, helium double ionization for very highly charged ion impact (q/v > 1) is still unclear in strong coupling regimes [3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 85%

“…Here the subscripts 1 and 2 represent the first and the second released target electrons, i.e., P I 1 is the ionization probability 022710-2 [16,17]; solid diamond: He 2+ [18]; open circle: present C 4+ data; solid circle: O 7+ [19] and N 7+ data [20]; solid star: Fe 15+ [21]; blue solid circle: Fe 20+ [21] and I 20+ [15]; green diamond: U 36+ [14][15][16][17][18][19][20][21][22]; purple diamond: U 44+ data [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]; red star: U 89+ ∼U 92+ data [3][4][5][6][7][8][9][10][11][12][13][14]). …”

Section: Modelmentioning

confidence: 99%

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High-charge-state limit for the double-to-single ionization ratio of helium in the strong-coupling regime

et al. 2011

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We measured the double-to-single-ionization ratios R of helium impacted by the intermediate velocity C 4+ ion and found that R decreases as 1/v. This type of velocity dependence is consistent with the data for very highly charged ions (N 7+ ∼ U 92+ ). The charge state and velocity dependences of R are interpreted well by the classical over-barrier-ionization (COBI) model. It is found that the ratio R can be written in a manner of R = 0.28 √ q/v for very high-q projectiles in the strong coupling (q/v > 1) regime. This theoretical prediction is in excellent agreement with extensive experimental data.

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“…ECOB and MCBM were verified and compared with many experimental results [13][14][15]. For collisions at medium and high energies where impact ionization occurs [16,17], different models were developed to describe the mechanism, such as the classic trajectory Monte Carlo model (CTMC) [18]. Apart from classic models, models based on the time-dependent two-center Dirac equation have recently been developed by Tupitsyn et al [19,20] and provide good agreement with the experimental data [21].…”

Section: Introductionmentioning

confidence: 93%

Charge transfer of slow highly charged xenon ions in collisions with magnesium atoms

et al. 2013

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We report an experimental study of the charge-transfer process in collisions of Xe q+ ions (16 q 20) with magnesium atoms at an energy of 5.5q keV. With charge-selective and time-coincidence techniques, we separated the pure capture and capture accompanied by transfer-ionization processes. The experimental data indicate that the magnesium target is around two times more likely to lose two electrons than one in the collision. This finding is very different compared to the calculation based on the extended classic over-the-barrier model. The Xe q+ -Mg collision also behaves very differently from "traditional" collisions between highly charged ions and noble gases. We suggest a one-step dielectronic mechanism for the capture process. The data also show that autoionization dominates the relaxation process after the capture, and fluctuation of the autoionization fraction versus the projectile charge state indicates that for the relaxation processes, the projectile core structure plays a more important role than the detailed characteristics of the projectile states where the target electrons are initially captured.

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Coincidence studies of capture and ionization in highly chargedIq+-He andU

Cited by 63 publications

References 39 publications

Direct ionization of helium by low and intermediate Cq+ and Oq+ (q=1–4) ions

Direct ionization of helium by low and intermediate Cq+ and Oq+ (q=1–4) ions

High-charge-state limit for the double-to-single ionization ratio of helium in the strong-coupling regime

Charge transfer of slow highly charged xenon ions in collisions with magnesium atoms

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