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Título del libro: Gd 2008 - 17th International Conference On Gas Discharges And Their Applications
Título del capítulo: O4- swarm data in O2

Autores UNAM:
JAIME DE URQUIJO CARMONA;
Autores externos:

Idioma:
Inglés
Año de publicación:
2008
Palabras clave:

Brillouin; Collision cross sections; Ion Mobility; Jeffreys; Monte Carlo algorithms; Time-resolved; Approximation algorithms; Gas discharge tubes; Glow discharges; Negative ions; Oxygen; Rate constants


Resumen:

In this paper, we present the preliminary results from the calculation and measurement of the mobility of negative ions in oxygen, carried out with a pulsed Townsend, time-resolved apparatus. From these measurements and a previous work in this direction, we are led to suggest that the mobility of the negative ion under question corresponds to the O4- species. On the other hand, our calculations are based on an optimised Monte-Carlo algorithm using collision cross sections obtained from a JWKB approximation (Jeffreys-Wrentzel-Kramers - Brillouin) or taken from literature. Under the above assumption, we have been able to extend the range of measurement with our calculations and thus provide ion mobilities and reaction rate constants for E/N ranges below and above those covered by the experiment.


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