Rotational relaxation in sonic nozzle expansions

Rotational relaxation in sonic nozzle expansions

The thermal conduction model for cooling in sonic nozzle expansions is extended to rotational degrees of freedom. Unimolecular decomposition theory, as applied to collision complexes, provides a natural formalism for describing the rotational–translational coupling. Simple expressions are presented...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:J. Chem. Phys.; (United States) 1980-01, Vol.72 (1), p.192-197
1. Verfasser: Klots, Cornelius E.
Format: Artikel
Sprache:eng
Schlagworte:
640302 - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory
ATOMIC AND MOLECULAR PHYSICS
BEAMS
COOLING
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
EXPANSION
FLUID FLOW
GAS FLOW
HEAT TRANSFER
MOLECULAR BEAMS
NOZZLES
RELAXATION
ROTATIONAL STATES
THERMAL CONDUCTION
VIBRATIONAL STATES
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The thermal conduction model for cooling in sonic nozzle expansions is extended to rotational degrees of freedom. Unimolecular decomposition theory, as applied to collision complexes, provides a natural formalism for describing the rotational–translational coupling. Simple expressions are presented for the terminal ’’temperatures’’ as functions of the source parameters and the relevant long-range r−6 potential. Extensions to other potentials and to vibrational relaxation are indicated.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.438902