15,961 research outputs found
The production of atoms and simple radicals in glow discharges
Chemical mechanism of alternating and direct current electrodeless discharge
Neutral reactions involving hydrogen and other minor constituents
Neutral reactions involving hydrogen and other minor chemical elements are reviewe
Reactions of metastable nitrogen atoms
Line absorption analysis and reaction kinetics of two metastable nitrogen atomic energy level
Kinetics of the reaction OH (v equals 0) plus O3 yields HO2 plus O2
The rate constant (kl) of the reaction OH(v=o) + O3 yields HO2 + O2 measured over the temperature range 220 to 450 K at total pressures between 2 and 5 torr using ultraviolet fluorescent scattering for the detection of OH radicals. An Arrhenius expression was obtained, and the rate constant for the reaction HO2 + O3 yields OH + 2O2 was inferred to be less than 0.1 kl over the entire temperature interval
Kinetics of the O plus O3 reaction
The gas phase reaction O + O3 yields 2 O2 was studied directly in a flow system under conditions of excess ozone, with O-atoms produced by thermal decomposition of Ar-O3 mixtures on a Nernst Glower, and measurement of the spatial O-atom decay by O + NO chemiluminescence with small, variable NO additions. The rate constant was found to be (9.6 + or - 0.7) x 10 to the minus 15th power cu/cm/molecule/sec at 298 K. Over the temperature range 269 to 409 K a rate expression (1.78 + or - 0.28) x 10 to the 11th power exp((-4.46 + or - 0.10 kcal/mole)/RT) is reported. The effects of interference by O2 (delta sub g) and product excitation are discussed, and the present results are compared with earlier investigations
Technology utilization review and analysis, Volume I Final report, 28 Feb. - 31 Aug. 1964
Technology utilization review and analysis of Ranger Block III program - protein detection, biochemical battery, and solar cell technolog
Gas phase reaction rates of some positive ions with water at 296 K
Measuring rate constants for reactions of various gas phases with water by flowing afterglow techniqu
Recurrent microblazar activity in Cygnus X-1?
Recurrent flaring events at X- and soft gamma-ray energies have been recently
reported for the galactic black hole candidate Cygnus X-1. The observed fluxes
during these transient outbursts are far higher than what is observed in
``normal'' episodes. Here we suggest that the origin of this radiation is
non-thermal and produced by inverse Compton interactions between relativistic
electrons in the jet and external photon fields, with a dominant contribution
from the companion star field. The recurrent and relatively rapid variability
could be explained by the precession of the jet, which results in a variable
Doppler amplification.Comment: 4 pages, 5 figures, Accepted for publication in Astronomy &
Astrophysics Letter
Oscillator strength of the resonance transitions of ground-state N and O
Oscillator strength of resonance transitions of ground state nitrogen and oxyge
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