Storage device for molecular detector
View Patent ↗The invention relates to ion storage devices for a molecular detector which determines the presence and quantity of a predetermined ion species out of a large number of stored ions. The invention consists in installing two or more ion storage devices in such a way that filling of one ion storage device and detection of predetermined ion species from an other ion storage device can be carried synchronously. In particular, ion filling and ion sampling can occur through the same opening.
1. Molecular detector comprising an ion source, at least two accumulators to store ions and a molecular analyzer to analyze predetermined ion species from the accumulators, wherein the accumulators are arranged between the ion source and the analyzer in such a way that one accumulator can be fed with ions from the ion source while the ions from an other accumulator are transferred into the molecular analyzer for analysis.
2. Molecular detector according to claim 1 , wherein the accumulators have only one opening each through which the ions are fed in and sampled out for analysis.
3. Molecular detector according to claim 1 , wherein two accumulators are arranged on a turntable.
4. Molecular detector according to claim 1 , wherein more than two accumulators are arranged on the turntable and several ion sources or several molecular analyzers are present.
5. Molecular detector according to claim 4 , wherein at least two groups of accumulators are arranged on at least two movable supports so that the individual accumulators of one group can be positioned individually in front of an ion source or in front of a molecular analyzer.
6. Molecular detector according to claim 3 , wherein the turntable is accommodated in a cylindrical housing and equipped with a sealing partition which rotates with it, and which separates the pump stage for feeding the accumulator with ions from the pump stage for analyzing the ions.
7. Molecular detector according to claim 1 , wherein the accumulators are defined by electric RF fields with superimposed DC potential depressions, and the motion of the stored ions from the filling position into the analyzing position is created by electrical means.
8. Molecular detector according to claim 1 further comprising a means, operable when the ions from the other accumulator have been transferred into the molecular analyzer for analysis, for interchanging the one accumulator and the other accumulator so that the other accumulator can be fed with ions from the ion source while ions from the one accumulator are transferred into the molecular analyzer for analysis.