[3P25] Characteristic of outgassing for 0.2 percent Be-Cu
0.2% Be-Cu material is used as an ultra-high vacuum gauge, a high-performance mass spectrometer, and an ultra-high vacuum material etc. Because, it has characteristics such as high thermal conductivity, low thermal radiation, and low outgassing. The outgassing of BeCu has been measured by the build-up method, and it is known that it is very small amount. Therefore, we measured the outgassing speed by a general baking method of the chamber made of stainless steel. And the characteristics of BeCu and SUS304 were compared.