On stability of self-sustained volume discharge in working mixtures of non-chain electrochemical HF laser

Journal Article · Wed Aug 31 04:00:00 EDT 2011 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2011V041N08ABEH014583· OSTI ID:21552621

Belevtsev, A A; Kazantsev, S Yu; Konov, I G; Lebedev, A A; Podlesnykh, S V; Firsov, K N

Burning voltage of a self-sustained volume discharge (SSVD) is studied as a function of the specific energy deposition in SF{sub 5} with C{sub 2}-H{sub 6} and H{sub 2} mixtures, which are working media of a non-chain electrochemical HF laser. It is established that the voltage rises linearly with increasing the specific energy deposition, the relative voltage rise in the SF{sub 6}-C{sub 2}H{sub 6} mixtures being noticeably higher than in pure SF{sub 6} and SF{sub 6}-H{sub 2} mixtures. An assumption is suggested and substantiated on determining the role of molecule dissociation by the electron impact leading to the observed voltage rise. From experimental data we have found approximate energy expenditures of producing dissociation fragments including atomic fluorine in a discharge in pure SF{sub 6}: E-tilde {sub d}(F)= 5{+-}1 eV. The values of E{sub d} well agree with literature data obtained by other experimental methods. A conclusion is drawn that the dissociation process is the main mechanism limiting the current density, which implies SSVD realisation without preliminary gas ionisation in working mixtures of a non-chain HF laser and determines a higher stability of the volume discharge in mixtures of SF{sub 6} with hydrocarbons (deuterocarbons) as compared to mixtures with hydrogen (deuterium). A method is suggested and substantiated for numerical estimation of the limitation effect of the current density and its influence on the SSVD stability. (control of radiation parameters)

• OSTI ID: 21552621
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 8 Vol. 41; ISSN 1063-7818
• Country of Publication: United States
• Language: English

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74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKANES
CHALCOGENIDES
CHEMISTRY
CURRENT DENSITY
DATA
DEPOSITION
DEUTERIUM
DIMETHYL SULFIDE
DISPERSIONS
DISSOCIATION
DISSOCIATION ENERGY
ELECTRIC POTENTIAL
ELECTROCHEMISTRY
ELEMENTS
ENERGY
ENERGY CONSUMPTION
ETHANE
EXPERIMENTAL DATA
FLUORIDES
FLUORINE
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HYDROCARBONS
HYDROFLUORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
INORGANIC ACIDS
INORGANIC COMPOUNDS
IONIZATION
ISOTOPES
LASERS
LIGHT NUCLEI
MIXTURES
MOLECULES
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
STABILITY
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
SULFUR FLUORIDES