Ion guide chamber
First Claim
1. An ion guide chamber, comprisingan elongate chamber;
- at least one first electrode for generating a field for transporting ions along said elongate chamber;
at least one second electrode for generating a field for focusing ions within said elongate chamber;
wherein said elongate chamber comprises a resistive structure extending substantially along a main axis of said elongate chamber, whereas said at least one first electrode is constituted by said resistive structure; and
in that said at least one second electrode is arranged outside said elongate chamber;
said at least one first electrode is adapted to permit transporting said ions and said at least one second electrode is adapted to focusing said ions within said elongate chamber, thereby providing transporting of ions and focusing of ions at the same time within a single ion guide chamber.
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Accused Products
Abstract
An ion guide chamber comprising a gas-tight elongate chamber, at least one first electrode for generating a field for transporting ions along the elongate chamber and at least one second electrode for generating a field for focusing ions within the elongate chamber. The elongate chamber, e. g. constituted by a glass tube, comprises a resistive structure extending substantially along a main axis of the chamber, whereas the first electrode is constituted by the resistive structure. Furthermore, the second electrode is arranged outside the elongate chamber. Having the RF electrodes arranged outside the vacuum chamber, provides a mechanically simple solution as well as insuring that contamination of the RF electrodes to the analyte gas cannot occur. This allows for a cost-saving design of the RF electrodes and with the corresponding voltages outside the chamber, preferably at atmospheric pressure or high vacuum, avoids discharges within the tube.
26 Citations
17 Claims
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1. An ion guide chamber, comprising
an elongate chamber; -
at least one first electrode for generating a field for transporting ions along said elongate chamber; at least one second electrode for generating a field for focusing ions within said elongate chamber; wherein said elongate chamber comprises a resistive structure extending substantially along a main axis of said elongate chamber, whereas said at least one first electrode is constituted by said resistive structure; and
in that said at least one second electrode is arranged outside said elongate chamber;said at least one first electrode is adapted to permit transporting said ions and said at least one second electrode is adapted to focusing said ions within said elongate chamber, thereby providing transporting of ions and focusing of ions at the same time within a single ion guide chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification