Target Dependence of Single-Electron-Capture Cross Sections for Slow Be, B, C, Fe, Ni, and W Ions Colliding with Atomic and Molecular Targets

Imai, Makoto; Iriki, Y.; Itoh, Akio

doi:10.13182/fst13-a16447

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Cross sections obtained with the over-the-barrier model present typically an upperlimit cross section as the model assumes that for impact parameters smaller than a specific distance capture happens with 100% probability. For endothermic charge-transfer reactions cross sections are very small at low energies [25,26], typically much smaller than 10 −16 cm 2 . To illustrate the contribution of a non-zero cross section for Sn 2+ ions a cross section of 0.1 × 10 −16 cm 2 has been used in the simulations.…”

Section: Discussionmentioning

confidence: 99%

Evidence of production of keV Sn⁺ ions in the H₂ buffer gas surrounding an Sn-plasma EUV source

Rai

Bijlsma

Poirier

et al. 2023

Plasma Sources Sci. Technol.

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Charge-state-resolved kinetic energy spectra of Sn ions ejected from a laser-produced plasma (LPP) of Sn have been measured at different densities of the H2 buffer gas surrounding a micro-droplet LPP. In the absence of H2, energetic keV Sn ions with charge states ranging from 4+ to 8+ are measured. For the H2 densities used in the experiments no appreciable stopping or energy loss of the ions is observed. However, electron capture by Sn ions from H2 results in a rapid shift towards lower charge states. At the highest H2 pressure of 6×10−4 mbar, only Sn2+ and Sn+ ions are measured. The occurrence of Sn+ ions is remarkable due to the endothermic nature of electron capture by Sn2+ ions from H2. To explain the production of keV Sn+ ions, it is proposed that their generation is due to electron capture by metastable Sn2+∗ ions. The gateway role of metastable Sn2+∗ is underpinned by model simulations using atomic collision cross sections to track the charge states of Sn ions while traversing the H2 buffer gas.

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Section: Discussionmentioning

confidence: 99%

Evidence of production of keV Sn⁺ ions in the H₂ buffer gas surrounding an Sn-plasma EUV source

Rai

Bijlsma

Poirier

et al. 2023

Plasma Sources Sci. Technol.

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Mechanisms of non-adiabatic charge-exchange transitions in slow collisions of W ions with He, Ar and Kr atoms

Tolstikhina

Imai

Shevelko

2023

Nuclear Instruments and Methods in Physics Research Section B:

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Target Dependence of Single-Electron-Capture Cross Sections for Slow Be, B, C, Fe, Ni, and W Ions Colliding with Atomic and Molecular Targets

Cited by 2 publications

References 19 publications

Evidence of production of keV Sn⁺ ions in the H₂ buffer gas surrounding an Sn-plasma EUV source

Evidence of production of keV Sn⁺ ions in the H₂ buffer gas surrounding an Sn-plasma EUV source

Mechanisms of non-adiabatic charge-exchange transitions in slow collisions of W ions with He, Ar and Kr atoms

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Target Dependence of Single-Electron-Capture Cross Sections for Slow Be, B, C, Fe, Ni, and W Ions Colliding with Atomic and Molecular Targets

Cited by 2 publications

References 19 publications

Evidence of production of keV Sn+ ions in the H2 buffer gas surrounding an Sn-plasma EUV source

Evidence of production of keV Sn+ ions in the H2 buffer gas surrounding an Sn-plasma EUV source

Mechanisms of non-adiabatic charge-exchange transitions in slow collisions of W ions with He, Ar and Kr atoms

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Product

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Evidence of production of keV Sn⁺ ions in the H₂ buffer gas surrounding an Sn-plasma EUV source

Evidence of production of keV Sn⁺ ions in the H₂ buffer gas surrounding an Sn-plasma EUV source