Flugzeit-Massenspektrometer mit Gasphasen-Ionenquelle
摘要
A high particle density in the exhaust volume of a gas-phase ion source and simultaneously a very low particle density in the flight path of the time-of-flight mass spectrometer results in a high sensitivity while simultaneously maintaining a large dynamic range of the intensity display. In order to achieve this, it is necessary to divide the time-of-flight mass spectrometer into two or more regions of different pressure, the different regions being separated by a gas-flow impedance. A maximum particle density in the exhaust volume while simultaneously maintaining a minimum particle density in the flight path can be obtained by integrating the gas-flow impedances (3, 6) directly into the electrodes (1, 2) of the ion source. <IMAGE>
申请公布号
DE4322102(C2)
申请公布日期
1995.08.17
申请号
DE19934322102
申请日期
1993.07.02
申请人
BERGMANN, THORALD, DR., 82441 OHLSTADT, DE;BERGMANN, EVA MARTINA, 82441 OHLSTADT, DE