Testing our Ionospheric Electron Density Probe and Electron Temperature Probe in ISAS-JAXA Posted on May 14, 2014May 30, 2014 by Josaphat Tetuko Sri Sumantyo Our electron density probe and electron temperature probe were tested in ISAS-JAXA vacuum chamber to investigate the performance of these sensors before installing on our microsatellite GAIA-I to observe Ionospheric charateristics, May 2014.