Description

Detailed Product Description Photomultiplier tube (GDB)produces photoelectron through photon&#**9;s incidence to photocathode, then the photoelectron enters multiplication system through inputting electron optical system, and finally forms output current or voltage after twice emission, many times multiplying and collecting by anode, which is widely applied to the fields of photon counting, scinticounting and oil ***** photomultiplier tubes applied to oil exploration include GDBï&frac*4;�*1ï&frac*4;�GDBï&frac*4;�*0ï&frac*4;�GDBï&frac*4;�*8ï&frac*4;�GDBï&frac*4;�*0ï&frac*4;�GDBï&frac*4;�*4, etc with the temperatures of **5ã��C and **0ã��***** cathode sensitivityï&frac*4;�normal temperatureï&frac*4;�of GDBï&frac*4;�*0, GDBï&frac*4;�*0 pipe is 9Î&frac*4;A/1m, and that of GDB**1, GDB**8 pipe is *0Î&frac*4;A/1m; The anode sensitivity(normal temperature) of GDBï&frac*4;�*0ã��GDBï&frac*4;�*0 pipe is *0Î&frac*4;A/1m when the Max. voltage is ***0V, and that of GDBï&frac*4;�*1pipe is **0A/1m when the Max. voltage is ***0V and that of GDBï&frac*4;�*8 pipe is **0A/1m when the Max. voltage is ***0V. At the temperature of **0ã��C, when the plateau length of output voltage is larger than **0V, the pulse amplitude reduces *0% under the high temperature conditions