Related Experiment Video
Updated: Aug 24, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Negative ion formation and motion in a mixture of CCl4 and Ar
1Facultad de Ciencias, Universidad Autonoma del Estado de Morelos, Avenida, Universidad 1001, Colonia Chamilpa, Codigo Postal 62210 Cuernavaca, Morelos, Mexico. fbyousif@servm.fc.uaem.mx
Abstract:
This paper deals with the measurement of the mobility of negative ions in the mixtures of CCl4 with Ar with the CCl4 ratio up to 33.3%. The pulsed Townsend technique was employed to produce an integrated ionic avalanche over a range of the density-reduced electric field E/N for which ionization is either negligible or absent, and attachment processes are dominant, leading to the formation of mostly CCl-4. The E/N range of measurement was 1-50 Td (1 Td=10(-17) V cm(2)). Our measurements strongly suggest that attachment is the dominant process and only negative ions are formed.
Related Concept Videos
Ionic Bonding and Electron Transfer
Chemical Ionization (CI) Mass Spectrometry
Precipitation of Ions
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
Intermolecular Forces
Mass Spectrometry: Alkyl Halide Fragmentation
Transport Number

