Determination of the recombination coefficient in CO2laser discharges

1978 ◽  
Vol 33 (5) ◽  
pp. 417-419 ◽  
Author(s):  
Ch. Homann ◽  
H. Hübner ◽  
W. Bötticher
Keyword(s):  
Recombination Coefficient

Elektrische Leitfähigkeitsmessungen und Bestimmung des G(freie Ionen)-Wertes bei röntgenbestrahlten Flüssigkeiten verschiedener Molekularstruktur

1968 ◽  
Vol 23 (2) ◽  
pp. 126-133 ◽  
Author(s):  
Werner F. Schmidt
Keyword(s):  
Electrical Conductivity ◽  
Room Temperature ◽  
Absorbed Dose ◽  
Recombination Coefficient ◽  
Conductivity Measurements ◽  
Absorbed Dose Rate ◽  
X Ray ◽  
Free Ions ◽  
Radiation Induced

Electrical conductivity measurements were made for the determination of G (free ions) in some hydrocarbons. The radiation source was a x-ray tube operated at 55 kV. Four quantities were measured for each liquid: 1. the stationary electrical conductivity at low electric field strength during irradiation, 2. the mobilities of the radiation-induced ions, 3. the volume recombination coefficient, and 4. the absorbed dose rate.All measurements were performed with aerated liquids at room temperature. The following G-values were obtained: n-pentane 0,1; n-hexane and n-heptane 0,09; iso-octane 0,11; cyclohexane 0,06; benzene 0,07; decalin 0,04. The standard deviation was estimated to ± 25 per cent.

scholarly journals The basic reactions in the upper atmosphere II. The theory of recombination in the ionized layers

1947 ◽  
Vol 192 (1028) ◽  
pp. 1-16 ◽  
Keyword(s):  
Ionization Potential ◽  
Recent Work ◽  
Reaction Rates ◽  
Upper Atmosphere ◽  
Recombination Process ◽  
Recombination Coefficient ◽  
Lower Ionization Potential ◽  
Two Alternatives

Recombination in the ionized layers is discussed. It is pointed out that the results of recent work make the ionic recombination theory very difficult to maintain. Consideration is therefore given to two alternatives, the dust recombination theory and the molecular recombination theory. It is concluded that of these only the latter is at all promising. In the E layer the recombination process would be O + 2 + e → O׳ + O״, while in F 1 the effective reactions would be O + + XY → XY + + O XY + + e → X' + Y' }, N + 2 + e → N' + N'', and N + 2 + XY → XY + + N 2 XY + + e → X' + Y' }. The molecule XY possesses a lower ionization potential than O and need form only a very small fraction of the upper atmospheric content at the altitudes concerned. It is not identified but may be O 2 or NO. The reaction involving O + must be introduced, as otherwise the concentration of this ion would build up to impossibly large values. In F 2 the same reactions would be supposed to occur as in F 1 , but the reduced amount of XY would lead to a lower and pressure-dependent recombination coefficient. Confirmation of the theory must await proper determination of the reaction rates.

Determination of E region effective recombination coefficient using impulsive precipitation events

1992 ◽  
Vol 19 (5) ◽  
pp. 445-448 ◽  
Author(s):  
T. Nygrén ◽  
K. U. Kaila ◽  
A. Huuskonen ◽  
T. Turunen
Keyword(s):  
Recombination Coefficient ◽  
E Region ◽  
Precipitation Events
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