Isotope effect in charge-transfer collisions of H with He<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mo>+</mml:mo></mml:msup></mml:math>

Loreau, Jérôme; Ryabchenko, Sergey; Dalgarno, A.; Vaeck, Nathalie

doi:10.1103/physreva.84.052720

Cited by 15 publications

(17 citation statements)

References 23 publications

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“…The time-propagation is realized by the splitoperator algorithm [23] in the diabatic representation, and the S-matrix elements are calculated with the flux operator method [24] with a complex absorbing potential. This method has been previously described and used to compute charge transfer cross sections in several systems [25][26][27][28]. The second method is a time-independent approach which was used to ensure the validity of our results, in particular at low energy.…”

Section: Theorymentioning

confidence: 99%

Charge transfer in proton–helium collisions from low to high energy

Loreau

Ryabchenko

Vaeck

2014

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

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The cross section for charge transfer in proton-helium collisions has been computed in the energy range from 10 eV/u up to 10 MeV/u. Four different methods (full quantal time-independent and time-dependent methods, molecular and atomic basis set semi-classical approaches) valid in different energy regimes have been used to calculate the partial and total cross section for single-electron capture. The results are compared with previous theoretical calculations and experimental measurements and the different theoretical methods used are shown to be complementary for describing the charge transfer reaction. A fit of the cross section, valid for collision energies from 10 eV/u up to 10 MeV/u is presented based on these results.

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Section: Theorymentioning

confidence: 99%

Charge transfer in proton–helium collisions from low to high energy

Loreau

Ryabchenko

Vaeck

2014

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

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“…Due to the large number of such couplings, we do not show them here and refer the reader to Refs. [25,26] where they are discussed. The matrix of the radial non-adiabatic couplings in the basis of the adiabatic electronic functions {ζ m }, F mm ′ = ζ m |∂ R |ζ m ′ , can be used to build the diabatic representation [27].…”

Section: A Molecular Datamentioning

confidence: 99%

Photodissociation and Radiative Association of HeH⁺ in the Metastable Triplet State

et al. 2013

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We investigate the photodissociation of the metastable triplet state of HeH + as well as its formation through the inverse process, radiative association. In models of astrophysical plasmas, HeH + is assumed to be present only in the ground state, and the influence of the triplet state has not been explored. It may be formed by radiative association during collisions between a proton and metastable helium, which are present in significant concentrations in nebulae. The triplet state can also be formed by association of He + and H, although this process is less likely to occur. We compute the cross sections and rate coefficients corresponding to the photodissociation of the triplet state by UV photons from a central star using a wave packet method. We show that the photodissociation cross sections depend strongly on the initial vibrational state and that the effects of excited electronic states and non-adiabatic couplings cannot be neglected. We then calculate the cross section and rate coefficient for the radiative association of HeH + in the metastable triplet state.

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“…Consequently, it can influence many aspects of the molecular dynamics [18][19][20]. For the gas phase reaction of CH 4 + OH → CH 3 + H 2 O, the replacement of OH with OD reduces the free energy barrier, while substituting D for H (connected to C) increases the free energy barrier [21].…”

Section: Introductionmentioning

confidence: 99%

Isotope effects on the formation of the lowest rovibrational level of NaH molecule via pump–dump photoassociation

et al. 2015

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Isotope effect in charge-transfer collisions of H with He+

Cited by 15 publications

References 23 publications

Charge transfer in proton–helium collisions from low to high energy

Charge transfer in proton–helium collisions from low to high energy

Photodissociation and Radiative Association of HeH⁺ in the Metastable Triplet State

Isotope effects on the formation of the lowest rovibrational level of NaH molecule via pump–dump photoassociation

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Isotope effect in charge-transfer collisions of H with He+

Cited by 15 publications

References 23 publications

Charge transfer in proton–helium collisions from low to high energy

Charge transfer in proton–helium collisions from low to high energy

Photodissociation and Radiative Association of HeH+ in the Metastable Triplet State

Isotope effects on the formation of the lowest rovibrational level of NaH molecule via pump–dump photoassociation

Contact Info

Product

Resources

About

Photodissociation and Radiative Association of HeH⁺ in the Metastable Triplet State