Measurments of the gases evolved from the surfaces of several commercial metals.:(On the vacuum tests in the cyclotron.I)
スポンサーリンク
概要
- 論文の詳細を見る
We have designed all equipments of the vacuum apparatus in the cyclotron which is now under reconstruction at Univ. of Kyoto and have been testing the leaks in many parts of it.<BR>To have surmised that the speed in need of diffusion pump and operating pressure, we calculated the quantities of gases evolved from the surfaces of several commercial metals measuring the rate of pressure rise with the pumping gate closed.<BR>The pitted face of a drown steel pipe showed at the largest quantity of evolved gases and the cold rolled surface of a brass showed at the smallest of it. Reducing to the equivalent amount of an air, the upper and the lower values of the evolved gases are estimated to be 2.2×10<SUP>-8</SUP>mmHg, l·sec<SUP>-1</SUP> cm<SUP>-2</SUP> and 9.8×10<SUP>-10</SUP>mmHg l sec<SUP>-1</SUP>cm<SUP>-2</SUP> respectively at about 27°C<BR>However, the effective speed of an oil diffusion pump and the effective conductance of a tube which connects between a pump and an equipment are found to be very smaller than the final speed and theoretical conductance in the initial condition respectively.
- 一般社団法人 日本真空学会の論文
一般社団法人 日本真空学会 | 論文
- レ-ザ-生成プラズマからの放射X線利用X線リソグラフィ-とX線顕微鏡
- 超高真空中における金属の常温圧接
- 宇宙太陽発電所SPSと関連真空技術
- 高温におけるタングステン線条と低圧の一酸化窒素との反応
- ガラスへの薄膜技術