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With so many material outgassing test methodologies, three of them were available at Academy of Opto-Electronics, which are the pressure rise method (PR), the throughput method and the switching between two pumping paths method (SPP). In order to compare the data derived via different methods and decide the proper concept to conduct a test, outgassing experiments of two pumping speeds with various...
A new measurement apparatus for vacuum materials outgassing rate was developed, which is mainly composed of three systems, including ultra-high vacuum system, high vacuum system, switching between two pumping paths (SPP) measurement system. The test principle of the modified SPP method is described in details, and the newly-developed technique has two main advantages over the conventional one. Firstly,...
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