@inproceedings{oai:jaxa.repo.nii.ac.jp:00012710,
 author = {徳山, 好宣 and 小山, 孝一郎 and Sinha, H. S. S. and 渡部, 重十 and Tokuyama, Yoshinobu and Oyama, Koichiro and Sinha, H. S. S. and Watanabe, Shigeto},
 book = {スペース・プラズマ研究会　平成16年度, Space Plasma Conference FY2004},
 month = {Aug},
 note = {Existence of hydrated cluster ions is a well-established fact demonstrated unambiguously through laboratory simulations and in situ measurements in the D region of the ionosphere. A series of experiments was recently conducted at Sagamihara, Japan with the intention of detecting some the ions, which though predicted, have eluded detection in laboratory. The other motivation was to look for heavier ions in conditions close to ionospheric D region so that, with the availability of better ion mass spectrometers, these could now be detected by in situ experiments. Results of these experiments point to a new aspect, viz., the existence of neutral cluster molecules, which (a) have ionization potential of less than 10.2 eV, (b) have life times in excess of 90 min and (c) are formed in limited pressure range. Two neutral cluster molecules, which have been detected, are NO(H2O)4 and a molecule with mass number 131, which could probably be H3ONO(H2O)3N2. A number of other important ions, including 19(+), 29(+), 33(+), 37(+), 43(+) have also been detected in these experiments., 資料番号: AA0063347029},
 pages = {107--111},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)},
 title = {Detection of long living neutral clusters in laboratory simulation of ionospheric D region},
 year = {2005}
}