@article{oai:jaxa.repo.nii.ac.jp:00032893,
 author = {吉田, 篤正 and 藤井, 正美 and 西村, 純 and 小林, 正 and 平良, 俊雄 and 白井, 達也 and 立山, 暢人 and 鳥居, 祥二 and 会津, 英子 and 野村, 良志子 and 数野, 美つ子 and 西尾, 昭男 and YOSHIDA, Atsumasa and FUJII, Masami and NISHIMURA, Jun and KOBAYASHI, Tadashi and TAIRA, Toshio and SHIRAI, Tatsuya and TATEYAMA, Nobuto and TORII, Shoji and AIZU, Hideko and NOMURA, Yoshiko and KAZUNO, Mitsuko and NISHIO, Akio},
 journal = {宇宙科学研究所報告. 特集: 大気球研究報告},
 month = {Aug},
 note = {In emulsion chamber experiments, the detection of high energy showers has been carried out by naked eye scanning using non-screen type X-ray films. If we use non-screen type X-ray films such as the Sakura N-type, the detection threshold is about 1 to 2 TeV as depending on exposure conditions. In order to improve this threshold, we have tested screen type X-ray films contained in the emulsion chamber exposed at balloon altitude, and found it about 200 GeV for such films. This type of X-ray films is useful to detect showers in the medium energy range, a few hundred GeV, of cosmic ray electrons., 資料番号: SA0166692000},
 pages = {55--68},
 title = {スクリーン・タイプ X 線フィルムによるシャワーの検出},
 volume = {13},
 year = {1985}
}