DEVICE FOR TRANSPORTING THERMAL ENERGY AT TEMPERATURES LYING BELOW THE {80 -TEMPERATURE OF HELIUM

摘要

A device for transporting thermal energy at temperatures lying below the lambda -temperature of helium between a cooled 4 He container having a temperature lower than that of the lambda -point and a place to be cooled or a further container; the device comprises a pipe which has one end in communication with said container and the other end which is brought in thermal contact with the article to be cooled or debouches in the further container, the pipe comprising a sintered superleak which extends throughout the length of the pipe and covers a part of the cross-section thereof.