Gas temperature determination from the intensity distribution in the rotational structure of diatomic-molecule bands excited by electron impact

Journal Article · Thu Dec 31 23:00:00 EST 1987 · High Temp. (Engl. Transl.); (United States)

OSTI ID:6609171

Drachev, A I; Lavrov, B P

Simple kinetic models have been used to relate the rotational-level population distributions for the short-lived ..sigma.. and Pi excited vibrational-rotational states for homonuclear and heteronuclear diatomic molecules excited by electron impact from the long-lived ..sigma.. states. Calculations are given on how the electron-transition type and rotational-transition probability matrix influence the determination of the gas temperature T from the intensities in the resolved rotational structure. It is possible to determine T from the population ratios for levels in ..lambda..doublets in the Pi states for homonuclear molecules having nonzero nuclear spin.

• Research Organization: Zhdanov Leningrad State University
• OSTI ID: 6609171
• Journal Information: High Temp. (Engl. Transl.); (United States), Journal Name: High Temp. (Engl. Transl.); (United States) Vol. 26:1; ISSN HITEA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
EXCITED STATES
FLUIDS
GASES
KINETIC EQUATIONS
MOLECULE COLLISIONS
MOLECULES
PHYSICAL PROPERTIES
ROTATIONAL STATES
TEMPERATURE DISTRIBUTION
THERMODYNAMIC PROPERTIES
VIBRATIONAL STATES