The endothermic excitation transfer process Kr*(3Pj) + N2(X) → Kr(1S0) + N2(C): a sensitive probe for the 3P2: 3P0 population ratio

Gerwen, van Rjf; Vredenbregt, E.J.D.; Kerstel, Erik; Beijerinck, Hcw Herman

doi:10.1016/0301-0104(87)85073-5

Cited by 13 publications

(2 citation statements)

References 21 publications

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“…Despite numerous experimental studies, the process of excitation transfer is not fully understood, because the complexity of excited atom-heavy molecular systems is still almost prohibitive for large-scale calculation of the interaction potentials, coupling, and scattering cross-sections. No theoretical information is available, and only semiempirical potentials exist for Rg ( 3 P) + N 2 . , …”

Section: Introductionmentioning

confidence: 99%

Steric Effect in the Energy Transfer Reaction of N₂ + Rg (³P₂) (Rg = Kr, Ar)

2008

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Steric effect for the formation of N 2 (B, (3)Pi u ) in the energy transfer reaction of Kr ( (3)P 2) + N 2 has been measured using an oriented Kr ( (3)P 2, M J = 2) beam at a collision energy of 0.07 eV. The N 2 (B, (3)Pi u ) emission intensity was measured as a function of the magnetic orientation field direction in the collision frame. A significant atomic alignment effect on the energy transfer probability was observed. This result was compared with that for the formation of N 2 (C, (3)Pi g ) in the Ar ( (3)P 2) + N 2 reaction. Despite the large difference on the energy transfer cross-section, the atomic alignment dependence for Kr ( (3)P 2) + N 2 is found to be analogous to that for Ar ( (3)P 2) + N 2. It is revealed that the configuration of inner 4p (3p) orbital in the collision frame gives an important role for the stereoselectivity on electron transfer process via the curve-crossing mechanism.

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Section: Introductionmentioning

confidence: 99%

Steric Effect in the Energy Transfer Reaction of N₂ + Rg (³P₂) (Rg = Kr, Ar)

2008

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“…Another example of an exothermic reaction involving metastable argon is the excitation transfer between the metastable argon atoms and krypton atoms, which leads to the enhanced emission of specific lines of krypton [62,63]. In the opposite case of endothermic reactions, as for instance, in [64], excitation transfer to the a b g H , , line can only happen with considerable excess of kinetic energy of atoms. As the potential curves of the excited levels of H with  n 3 (Ar +H * ) do not show avoided crossing at large internuclear distances [55], the energy dependence of the cross section can be quite similar to the excitation cross section from the ground level.…”

Section: Discussionmentioning

confidence: 99%

Emission of fast hydrogen atoms at a plasma–solid interface in a low density plasma containing noble gases

Marchuk

Brandt

Pospieszczyk

et al. 2017

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

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The source of the broad radiation of fast hydrogen atoms in plasmas containing noble gases remains one of the most discussed problems relating to plasma-solid interface. In this paper, we present a detailed study of Balmer lines emission generated by fast hydrogen and deuterium atoms in an energy range between 40-300 eV in a linear magnetised plasma. The experiments were performed in gas mixtures containing hydrogen or deuterium and one of the noble gases (He, Ne, Ar, Kr or Xe). In the low-pressure regime (0.01-0.1 Pa) of plasma operation emission is detected by using high spectral and spatial resolution spectrometers at different lines-of-sight for different target materials (C, Fe, Rh, Pd, Ag and W). We observed the spatial evolution for Hα, H β and Hγ lines with a resolution of 50µm in front of the targets, proving that emission is induced by reflected atoms only. The strongest radiation of fast atoms was observed in the case of Ar-D or Ar-H discharges. It is a factor of five less in Kr-D plasma and an order of magnitude less in other rare gas mixture plasmas. First, the present work shows that the maximum of emission is achieved for the kinetic energy of 70-120 eV/a.m.u. of fast atoms. Second, the emission profile depends on the target material as well as surface characteristics such as the particle reflection, e.g. angular and energy distribution, and the photon reflectivity. Finally, the source of emission of fast atoms is narrowed down to two processes: excitation caused by collisions with noble gas atoms in the ground state, and excitation transfer between the metastable levels of argon and the excited levels of hydrogen or deuterium.

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Generation of Kr(3P0) atoms in a flow reactor: Reactions with CO, N2, NF3, and F2

Sobczynski

Beaman

Setser

et al. 1989

Chemical Physics Letters

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The endothermic excitation transfer process Kr*(3Pj) + N2(X) → Kr(1S0) + N2(C): a sensitive probe for the 3P2: 3P0 population ratio

Cited by 13 publications

References 21 publications

Steric Effect in the Energy Transfer Reaction of N₂ + Rg (³P₂) (Rg = Kr, Ar)

Steric Effect in the Energy Transfer Reaction of N₂ + Rg (³P₂) (Rg = Kr, Ar)

Emission of fast hydrogen atoms at a plasma–solid interface in a low density plasma containing noble gases

Generation of Kr(3P0) atoms in a flow reactor: Reactions with CO, N2, NF3, and F2

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The endothermic excitation transfer process Kr*(3Pj) + N2(X) → Kr(1S0) + N2(C): a sensitive probe for the 3P2: 3P0 population ratio

Cited by 13 publications

References 21 publications

Steric Effect in the Energy Transfer Reaction of N2 + Rg (3P2) (Rg = Kr, Ar)

Steric Effect in the Energy Transfer Reaction of N2 + Rg (3P2) (Rg = Kr, Ar)

Emission of fast hydrogen atoms at a plasma–solid interface in a low density plasma containing noble gases

Generation of Kr(3P0) atoms in a flow reactor: Reactions with CO, N2, NF3, and F2

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Steric Effect in the Energy Transfer Reaction of N₂ + Rg (³P₂) (Rg = Kr, Ar)

Steric Effect in the Energy Transfer Reaction of N₂ + Rg (³P₂) (Rg = Kr, Ar)