INVESTIGADORES
AVILA Eldo Edgardo
artículos
Título:
Charge Transfer During Individual Collisions in Ice Growing
Autor/es:
G. CARANTI; E. E. AVILA; M. RE
Revista:
JOURNAL OF GEOPHYSICAL RESEARCH
Editorial:
AMERICAN GEOPHYSICAL UNION
Referencias:
Año: 1991 vol. 96 p. 15365 - 15375
ISSN:
0148-0227
Resumen:
Measurements of charge transfer during individual collisions between ice
spheres and a target growing from vapor deposition have been performed in
order to establish the importance of fragmentation in the charging process. It
is found that when the target is a few degrees colder than the environment,
the charge pulses have mixed signs but the number of positive ones becomes
dominant as the target temperature decreases. This behavior is reproduced in
collisions with dielectric particles and a target in the same growth
conditions. Reversal in the temperature gradient reversed the sign of the
charge transfer. Direct evidence of fragments produced during collisions
suggests that they are responsible for the measured charge transfer.