A multipurpose quadrupole mass spectrometer detector for surface kinetic and absolute surface coverage measurements

摘要: A multipurpose mass spectrometer detector has been constructed for studies of adsorption and desorption from single‐crystal surfaces in an ultrahigh vacuum system. The may be used the kinetics on single crystals using collimated calibrated molecular‐beam dosers, as well direct measurement absolute sticking probability a function surface coverage. In addition, small sampling aperture line‐of‐sight procedures, it is possible to achieve high sensitivity detection gaseous products condensible products. mode operation, desorbing free radical species detected. Normally, spectrometers systems are not able employed combination purposes addressed by this instrument.