March 2016

Space charge kinetic treatment in Langmuir probes with cylindrical geometry

In this paper, an analysis of the space charge build up in the interelectrodic region of a velocity analyzer with cylindrical symmetry is performed using kinetic theory. Thus the present treatment includes temperature effects. Azimuth symmetry is also assumed. A detailed and comparative analysis, between planar and cylindrical electrodes, is carried out, showing the advantages of each kind of...

Author(s): E. Valdeblánquez, and P. Martín

March 2016

Investigating H and Z geomagnetic component disturbance field in the mid-latitude

The relationship in the variations of geomagnetic horizontal component (H) and vertical component (Z) in Boulder station (40.1°N, 254.8°) has been investigated. In the analysis, series of significant changes in amplitude and period are observed in H as well as in Z during the day-time. The changes in H and Z for the average yearly diurnal variations and for the monthly variations do not exhibit consistent...

Author(s): Okeke F. N., Okoro E. C. and Ugwu E. B. I.