<i>Chemical Kinetics of Gas Reactions</i>

Кондратьев, В. Н.; Crabtree, Jenny; Carruthers, S. N.; Shuler, Kurt E.

doi:10.1063/1.3051188

Cited by 32 publications

(16 citation statements)

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“…The specific ionization for Am-241 as a function of the distance to the source is shown in Fig. 2, reproduced from Kondrat'ev (1964). This curve is valid for ionization at atmospheric pressure, the pressure at which our experiments were performed.…”

Section: Sheath Airsupporting

confidence: 52%

The Effect of Alpha Source to Aerosol Distance on the Performance of a Diffusion Charger

Ichitsubo

Alonso

Kousaka

1996

Aerosol Science and Technology

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ABSTRACT. This paper discusses the effect of the distance between an a-ray source and a stream of ultrafine aerosol particles on the fraction of charged particles. A simple geometrical model is derived which takes into account the effect of charger walls on (i) the effective extent of the radiation cone, and (ii) the ion losses by Brownian diffusion. The model predicts with reasonable accuracy the relative concentration of ions leaving the charger when no aerosol is present. The experiments demonstrated that the relative concentrations of charged particles at the charger outlet can also be predicted by using the geometrical model developed for ions alone. In spite that the specific ionization of a rays has a maximum at about 3.7 cm from the source, the highest concentrations of charged particles were obtained when the aerosol was made to flow just above the radioactive source (zero separation distance).

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Section: Sheath Airsupporting

confidence: 52%

The Effect of Alpha Source to Aerosol Distance on the Performance of a Diffusion Charger

Ichitsubo

Alonso

Kousaka

1996

Aerosol Science and Technology

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“…Possibly the low value of Dc2H4-x for X = Br (and CH3S) requires that the addition proceed via a cross over between electronic states of different multiplicity. Such a process has already been suggested (14) for some types of radical additions to C=C bonds,4 and could explain the low value of A , (and A_,), since it would have a low transmission coefficient. In the case of X = C1 the much higher value of Dc2H4-x may shift the system of potential energy curves for the initial and final states so that interaction between states of the same multiplicity can occur, thus giving a much higher A factor.…”

Section: Discussionmentioning

confidence: 99%

Rate of addition of bromine atoms to ethylene

Wong¹

1970

Can. J. Chem.

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The rate of combination of bromine atoms in the photosensitized hydrobromination of ethylene has been determined by the rotating sector technique. From rhis and kinetic data reported previously the rate constant for the addition of bromine atoms to ethylene in the presence of 380 Tprr of propane as deactivating gas has been calculated to be 1.5 + 0.3 x 10-l4 cm3 molecule-' s-, independent of temperature in the range 15 to 35 "C. This result is discussed and compared with rate constants for other addition reactions to ethylene.

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“…A second type of gas phase collision is that occurring between the various (heavy) species generated by electron impact reactions, as well as between these species and the unreacted gas-phase molecules (25,26). Again, dissociation and ionization processes occur, but in addition, recombination and molecular rearrangements are prevalent.…”

Section: (1) Amentioning

confidence: 98%

“…A wide spectrum of heterogeneous processes can occur at solid surfaces exposed to a glow discharge (3,26,27).…”

Section: (1) Amentioning

confidence: 99%