@article{oai:nagoya.repo.nii.ac.jp:00020049,
 author = {ISHIKAWA, Haruji and MORITA, Yasuhiro and TAKAGI, Masumi and IWATA, Akira},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 note = {The measurement of atmospheric small ions with a Gerdien condenser was carried out in the altitude up to 25 km using a plastic balloon. Ion density, electric conductivity and this weighted mean mobility are deduced from simple 1-V characteristics of the condenser used. The conductivity profile observed is found to be fairly well coincident with the profile caluculated from a small ion balance theory below 12km, however, a disagreement between them is found to show up above 12km. The function of aerosols in the stratosphere is discussed as a plausible cause of the disagreement. We see that the number density, 0.5 per ㎤, of ten-micron size aerosols must be assumed at 25km altitude, if we prefer an interpretation of the disagreement exclusively by the aerosol effect.},
 pages = {143--154},
 title = {BALLOON OBSERVATION OF SMALL ION DENSITY AND ELECTRIC CONDUCTIVITY IN THE STRATOSPHEHE},
 volume = {16},
 year = {1969}
}