Three-body association reactions of NO+ and O+2 with N2

Speller, C. V.; Pointu, A. M.

doi:10.1063/1.446067

Cited by 29 publications

(11 citation statements)

References 26 publications

(1 reference statement)

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“…The experimental apparatus and procedure have been previously described in detail elsewhere [10][11][12]. Some improvements have been made by modifying the gas mixture control, the data measurement and the vacuum system.…”

Section: Experimental and Theoretical Methodsmentioning

confidence: 99%

Electron impact ionisation cross-sections of 2-heptanone

Vacher

Blin-Simiand

Jorand

et al. 2005

International Journal of Mass Spectrometry

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Section: Experimental and Theoretical Methodsmentioning

confidence: 99%

Electron impact ionisation cross-sections of 2-heptanone

Vacher

Blin-Simiand

Jorand

et al. 2005

International Journal of Mass Spectrometry

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“…8 For N 2 O 2 + , the dissociation energy ∆E corresponding to reaction ͑5b͒ found in the literature is equal to 0.22 eV. 16 Then, in order to overcome the lack of energy dissociation data for reaction ͑5a͒, ∆E is assumed to be the same as for reaction ͑5b͒ ͑i.e., 0.22 eV͒. The reason is that, due to its molecular structure, N 2 O 2 + can be considered to impact with its parent molecule ͑either N 2 or O 2 molecules͒ as given in either reactions ͑5a͒ or ͑5b͒.…”

Section: B Sets Of Collision Cross Sections Formentioning

confidence: 99%

“…Langevin's theory, which is suitable at low ion energies, in the case of the long range attractive potential, is used to estimate the collision cross section Q conv corresponding to reaction ͑6a͒. In fact, this ion conversion cross section is approximated from Langevin relation ͑7͒ by using a scaling factor g conv in order to obtain the best fit to the reaction rate k 6.a , as given by Speller 16 and Kossyi 19 at zerofield or thermal energy conditions…”

Section: B Sets Of Collision Cross Sections Formentioning

confidence: 99%

Drift and reactions of positive tetratomic ions in dry, atmospheric air: Their effects on the dynamics of primary and secondary streamers

Bekstein

Yousfi

Benhenni

et al. 2010

Journal of Applied Physics

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The ion swarm data, namely, the reduced mobility, diffusion, and reaction rates of the positive tetratomic ions O4+ and N2O2+ in N2 and O2 have been determined from a Monte Carlo simulation using calculated and fitted elastic and inelastic cross sections. The elastic momentum transfer cross sections have been determined from a semiclassical Jeffreys-Wentzell-Kramers-Brilouin (JWKB) approximation based on a rigid core potential model well adapted for polyatomic ions. The inelastic cross sections have been approximated from considerations based on the N4+/O2 and N4+/N2 systems. The validated cross section sets in pure N2 and O2 have been used to determine the O4+ and N2O2+ swarm data in dry air over a large E/N range up to 1000 Td. However, due to the lack of experimental ion transport coefficients necessary for a more rigorous cross section validation, the present data, validated only at low E/N, should be regarded as a first approximation, susceptible to improvements as soon as measurements of ion transport coefficients become available in the literature. Then, the present data are used in a two-dimensional discharge dynamics fluid model for the simulation of the primary and secondary streamers for the case of a positive point-to-plane corona discharge in dry air. Relevant characteristics such as discharge current, charged particle densities, space charge electric field and the variation in active species like N and O radicals (very useful in many nonthermal plasma applications) are analyzed and discussed with and without the consideration of three positive tetratomic ions (N4+, O4+, and N2O2+). More particularly, the non-negligible effect of O4+, in the dynamics of the primary and secondary streamers during the discharge propagation and relaxation stages is highlighted with an emphasis on the role of the related kinetic reactions occurring between the different charged particles.

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“…The mea sure ments were per formed with the High-Pressure Mass Spec trom e ter at the Université de Paris-Sud/LPGP, where ion iza tion is ini ti ated by alpha-particle bom bard ment. The ex per i men tal sys tem is the same as pre vi ously de scribed 4,11 . Fig ure 1 il lus trates the over all ge om e try of the mass spec trom e ter sam pling system.…”

Section: Ex Per I Men Talmentioning

confidence: 99%

“…Pure N 2 and CH 4 , as well as N 2 -CH 4 mix tures were used to ob tain the data. In the pres ent work, we have car ried out stud ies on N 2 -C 2 H 2 mix tures at high pres sures (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). As in pre vi ous stud ies, the main purpose was to ob tain thermochemical data on clus ter ing ion-molecule re ac tions per ti nent to the ion chem is try of Titan's at mo sphere.…”

Section: Introductionmentioning

confidence: 99%