@article{oai:ir.kagoshima-u.ac.jp:00004555,
 author = {YUDA, Masahiro and 湯田, 正宏 and ICHIMARU, Osamu and 一丸, 修 and NUMATA, Tadashi and 沼田, 正 and OGUSHI, Tetsuya and 大串, 哲彌 and SAUR, Eugen},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Nov},
 note = {If a Josephson junction can be performed in normal-boiling-liquid-hydrogen the applications of cryo-electronic devices will be greatly expanded. Such a technique has two great advantages. One of those is that it is helpful for the shortages of He gas. The other one is there are no heat spots because of good thermal contact with the liquid. Therefore the sample temperature can very easily be kept constant in contrast with using cold He gas. An examination on the combined systems of a Josephson microbridge and a very small liquefier of hydrogen was carried out. It was necessary that the microbridge had a higher superconductive-critical-temperature than the normal boiling-liquid-hydrogen-temperature. High pressure H_2 in an bonbe was use to make hydrogen liquid using the Joule-Thomson effect. A zero-voltage current of the Nb_3Ge mlcrobridge was observed in the liquefied hydrogen.},
 pages = {135--138},
 title = {Combined system between Nb_3Ge microbridge and a portable-hydrogen-liquefier},
 volume = {26},
 year = {1984}
}