Temperature-cycled cold trap

摘要: A cold trap for use in a high vacuum system to analyze the vapor component or components of gases in, introduced into, system, including assessment partial pressure any specific which may be present said gases, comprising chamber closed at its upper end by thin metallic diaphragm dished inwardly receive liquid coolant such as nitrogen, an outlet interconnect with and means introduce successive doses into diaphragm. This construction allows rapidly cycled. It is shown advantageous radius curvature lowest part that area remains temperature until all has evaporated larger than effective outlet.