Recombination structures and their effects in depleted low-pressure gas discharges

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 317 KB
• Volume: 30
• Category: Article
• ISSN: 0042-207X
• DOI: 10.1016/s0042-207x(80)80464-7

✦ Synopsis

Classified abstracts [4436][4437][4438][4439][4440][4441][4442][4443][4444] detector is composed of a mass spectrometer installed in a detector chamber and a collimator set on the entrance of the detector chamber. The collimator has two apertures and a pumping surface between them. The performance of the collimator is analysed and compared with experimental data. The ratio of the incident flux intensities of molecules to the detector coming directly from a test surface to the one of chaotic background molecules, collimation efficiency, depends on the pumping speed of the collimator and the bell jar. When the pumping speed of the collimator is increased by cooling the inner wall and/or deposition of evaporated Ti on it, the collimation efficiency can be increased by a factor of 102. (Japan) M Kobayashi and Y Tuzi,