State-resolved transport collision integrals for the 
O+O2
 system

Abstract Two-dimensional binary gas mixture outflow from a vessel into vacuum through a thin slit is studied on the basis of direct solution of the Boltzmann kinetic equation. For evaluation of collision integrals in the Boltzmann equation a conservative projection method is used. Numerical simulation of a two-dimensional argon-neon gas mixture outflow from a vessel into vacuum was performed. Graphs of mixture components flow rate dependence on time during the flow formation, as well as fields of molecular density and temperature for steady-state regime, were obtained.

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Resonant Charge Exchange in Ion-Parent–Atom Collisions: The Inelastic Contribution to Odd-Order Collision Integrals

Fundamental Aspects of Plasma Chemical Physics - Springer Series on Atomic, Optical, and Plasma Physics ◽

10.1007/978-1-4419-8172-1_4 ◽

2013 ◽

pp. 99-121

Author(s):

Mario Capitelli ◽

Domenico Bruno ◽

Annarita Laricchiuta

Keyword(s):

Charge Exchange ◽

Collision Integrals ◽

Resonant Charge Exchange ◽

Inelastic Contribution ◽

Odd Order ◽

Parent Atom

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Waldmann-Snider Collision Integrals and Nonspherical Molecular Interaction. I. Collision Integrals for Pure Gases

Zeitschrift für Naturforschung A ◽

10.1515/zna-1974-1202 ◽

1974 ◽

Vol 29 (12) ◽

pp. 1705-1716 ◽

Cited By ~ 21

Author(s):

W. E. Köhler

Keyword(s):

Angular Momentum ◽

Cross Sections ◽

Molecular Interaction ◽

Scattering Amplitude ◽

Collision Operator ◽

Positive Definiteness ◽

Collision Integrals ◽

General Properties ◽

Relaxation Coefficients ◽

Rotational Angular Momentum

Collision integrals of the linearized Waldmann-Snider collision operator for pure gases are defined. General properties due to invariances of the molecular interaction are discussed. Effective cross sections are introduced and expressed in terms of convenient bracket symbols. The positive definiteness of the relaxation coefficients is proved. The approximation of small nonsphericity for the scattering amplitude is explained and consequences for the collision integrals are investigated. Molecular cross sections describing the orientation and reorientation of the molecular rotational angular momentum are defined. Expressions for effective cross sections relevant for the various nonequilibrium alignment phenomena are presented.

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Notizen: Quantum Mechanical Calculation of Collision Integrals for HD

Zeitschrift für Naturforschung A ◽

10.1515/zna-1971-1123 ◽

1971 ◽

Vol 26 (11) ◽

pp. 1926-1928 ◽

Cited By ~ 7

Author(s):

W. E. Köhler

Keyword(s):

Scattering Amplitude ◽

Quantum Mechanical ◽

Collision Term ◽

Tensor Polarization ◽

Collision Integrals ◽

First Order ◽

Relaxation Coefficient ◽

Angular Momenta ◽

Experimental Values ◽

Good Agreement

The magnetic Senftleben-Beenakker effect of the viscosity is mainly determined by two collision integrals of the linearized quantum mechanical Waldmann-Snider collision term, viz. by the relaxation coefficient of the tensor polarization of the molecular rotational angular momenta and by the coefficient which couples the friction pressure tensor and the tensor polarization. Starting from a simple nonspherical potential for HD, the scattering amplitude is evaluated analytically in first order distorted wave Born approximation and the two collision integrals are calculated for room temperature. A fairly good agreement with experimental values is found.

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