Time-dependent aspects of electron degradation. V. Ar-H sub 2 mixtures

Journal Article · Sun Jul 15 04:00:00 EDT 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.42.795· OSTI ID:6687145

Kowari, K; Inokuti, M ^[1]; Kimura, M ^[2]

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1. Argonne National Laboratory, Argonne, IL (USA)
2. Argonne National Laboratory, Argonne, IL (USA) Department of Physics, Rice University, Houston, TX (USA)

Time-dependent electron degradation spectra and yields of initial products are studied for the Ar-H{sub 2} mixture by using the time-dependent Spencer-Fano (TDSF) theory. An integral form of the TDSF equation is derived and applied in numerical solutions. The present study shows, in the time-dependent context, that addition of a small amount of H{sub 2} in Ar greatly enhances the yield of the triplet states of H{sub 2} because of the presence of subexcitation electrons whose energies are below the electronic excitation threshold of Ar. The production of the triplet states is slow; it takes a period ten times longer than fast processes such as ion production. Secondary processes such as ion-molecule reactions following the electron degradation process are also discussed.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6687145
• Journal Information: Physical Review, A (General Physics); (USA), Journal Name: Physical Review, A (General Physics); (USA) Vol. 42:2; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
BINARY MIXTURES
COLLISIONS
DISPERSIONS
ELECTRON COLLISIONS
ELEMENTS
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HYDROGEN
ION DENSITY
MIXTURES
NONMETALS
RARE GASES
SPECTRA
SPENCER-FANO THEORY
TIME DEPENDENCE