Absolute measurement of the total cross section in 2 keV/u - 10 keV/u D2+ + H charge transfer collisions

Andrianarijaona, V. M.; Wegley, L. M.; Watson, A. Z.; Andrianarijaona, M.; DeGuzman, Charles P.; Kim, K.; Nuss, E.; Taylor, J. J.; Wilson, R.L.; Zhang, R. T.; Seely, D. G.; Havener, C. C.

doi:10.1063/1.5127728

Cited by 4 publications

(21 citation statements)

References 16 publications

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“…The TICC model has been extended to calculate the NRCT cross section in a wider energy range, by solving the close-coupling equations for J = 0 to 300. The simulated NRCT cross sections are compared with the experimental results of Andrianarijaona et al [5,6]. The TICC cross section is very close to the wave packet results for D 2 (v = 7) below 1 eV, but is lower than the total WP NRCT cross section, since it does not take into account the other v' levels.…”

Section: Resultssupporting

confidence: 59%

“…The present theoretical results for each initial v are compared with the experimental cross sections in the top panel of Figure 4. In the experimental work by Andrianarijaona et al [5,6] on the H + D + 2 collisions, the H + products were detected, i.e. they provide a direct evidence on the NRCT cross section.…”

Section: Resultsmentioning

confidence: 92%

“…Given the similarity between Urbain et al. 's molecular ions and the ones in Andrianarijaona et al,'s experiment [5,6], the 3-D imagine technique would be an appropriate fit to provide data that will accomplish our goal. The theoretical simulations presented in this work are expected to provide a good guidance to interpret such measurements.…”

Section: Resultsmentioning

confidence: 98%

“…The main goal of this work is to compare the simulated cross sections for each D + 2 (v) vibrational state with the experimental measurements. In this line, the measurements made in the H + D + 2 reaction [5,6] can then be considered as benchmark for the comparison with the theoretical simulations, which conclusions can be generalized to other isotopes and to similar reactions for other cations.…”

Section: Introductionmentioning

confidence: 99%

“…This reaction has been studied experimentally at rather high energies, > 1 keV, by Karpas et al [3] and by McCartney et al [4]. Andrianarijaona et al [5,6] measured the H + D + 2 → H + +D 2 charge transfer cross section in a broad energy range, from 0.1 eV/u to 10 keV/u, thus including energies more relevant for the astrophysical environment. At this point it is worth mentioning that the D + 2 reactant is excited vibrationally since it is generated by photoionisation or electronic impact.…”

Section: Introductionmentioning

confidence: 99%

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Vibrational effects in the quantum dynamics of the H + D₂⁺ charge transfer reaction

et al. 2021

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The H + D + 2 (v=0,1 and 2) charge transfer reaction is studied using an accurate wave packet method, using recently proposed coupled diabatic potential energy surfaces. The state-to-state cross section is obtained for three different channels: non-reactive charge transfer, reactive charge transfer, and exchange reaction. The three processes proceed via the electronic transition from the first excited to the ground electronic state. The cross section for the three processes increases with the initial vibrational excitation. The non-reactive charge transfer process is the dominant channel, whose branching ratio increases with collision energy, and it compares well with experimental measurements at collision energies around 0.5 eV. For lower energies the experimental cross section is considerably higher, suggesting that it corresponds to higher vibrational excitation of D + 2 (v) reactants. Further experimental studies of this reaction and isotopic variants are needed, where conditions are controlled to obtain a better analysis of the vibrational effects of the D + 2 reagents.

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Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vibrational effects in the quantum dynamics of the H + D₂⁺ charge transfer reaction

et al. 2021

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Unveiling Quantum Interference in the D⁺ + H₂ Nonadiabatic Reaction Dynamics at Low Collision Energies

Mao,

Yang,

Buren

et al. 2024

J. Phys. Chem. A

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Near-resonant effects in the quantum dynamics of the H + H2+ → H2 + H+ charge transfer reaction and isotopic variants

Sanz-Sanz

Aguado

Roncero

2021

The Journal of Chemical Physics

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The non-adiabatic quantum dynamics of the H + H + 2 → H 2 + H + charge transfer reactions, and some isotopic variants, is studied with an accurate wave packet method. A recently developed 3 × 3 diabatic potential model is used, which is based on very accurate ab initio calculations and includes the long-range interactions for ground and excited states. It is found that for initial H + 2 (v = 0), the quasi-degenerate H 2 (v ′ = 4) non-reactive charge transfer product is enhanced, producing an increase in the reaction probability and cross section. It becomes the dominant channel from collision energies above 0.2 eV, producing a ratio between v ′ = 4 and the rest of v's, which that increase up to 1 eV. The H + H + 2 → H + 2 + H exchange reaction channel is nearly negligible, while the reactive and non-reactive charge transfer reaction channels are of the same order, except that corresponding to H 2 (v ′ = 4), and the two charge transfer processes compete below 0.2 eV. This enhancement is expected to play an important vibrational and isotopic effect that needs to be evaluated. For the three proton case, the problem of the permutation symmetry is discussed when using reactant Jacobi coordinates.

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Absolute measurement of the total cross section in 2 keV/u - 10 keV/u D2+ + H charge transfer collisions

Cited by 4 publications

References 16 publications

Vibrational effects in the quantum dynamics of the H + D₂⁺ charge transfer reaction

Vibrational effects in the quantum dynamics of the H + D₂⁺ charge transfer reaction

Unveiling Quantum Interference in the D⁺ + H₂ Nonadiabatic Reaction Dynamics at Low Collision Energies

Near-resonant effects in the quantum dynamics of the H + H2+ → H2 + H+ charge transfer reaction and isotopic variants

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Absolute measurement of the total cross section in 2 keV/u - 10 keV/u D2+ + H charge transfer collisions

Cited by 4 publications

References 16 publications

Vibrational effects in the quantum dynamics of the H + D2+ charge transfer reaction

Vibrational effects in the quantum dynamics of the H + D2+ charge transfer reaction

Unveiling Quantum Interference in the D+ + H2 Nonadiabatic Reaction Dynamics at Low Collision Energies

Near-resonant effects in the quantum dynamics of the H + H2+ → H2 + H+ charge transfer reaction and isotopic variants

Contact Info

Product

Resources

About

Vibrational effects in the quantum dynamics of the H + D₂⁺ charge transfer reaction

Vibrational effects in the quantum dynamics of the H + D₂⁺ charge transfer reaction

Unveiling Quantum Interference in the D⁺ + H₂ Nonadiabatic Reaction Dynamics at Low Collision Energies