公开(公告)号：US08440964B2

公开(公告)日：2013-05-14

申请号：US13213787

申请日：2011-08-19

Applicant: Vadym D Berkout ,  Vladimir M. Doroshenko

Inventor： Vadym D Berkout ,  Vladimir M. Doroshenko

IPC: G21K1/08 ,  H01J49/42 ,  H01J49/00

CPC classification number: H01J49/063 ,  H01J49/24

Abstract: A device and method for transporting ions along a longitudinal direction in an elevated gas pressure region. The device includes a multipole ion guide having a set of rods positioned along the longitudinal direction on an inscribed diameter equal to or less than 3.5 mm, a voltage source which provides alternating voltages to at least a subset of the rods to create a trapping field in a transverse direction, and a conductance limit having an opening d and placed at the exit of the multipole ion guide. At the end of this configuration near the opening of the conductance limit, a converging continuum gas flow through the conductance limit is provided that transfers the ions collimating near a center of the ion guide into a low gas pressure region. The method injects ions into the elevated gas pressure region of the ion guide, and transports the ions in the converging continuum gas flow into the low gas pressure region.

Abstract translation: 一种用于在升高的气体压力区域沿着纵向输送离子的装置和方法。 该装置包括多极离子导向器，其具有沿着纵向方向定位在一个等于或小于3.5mm的内接直径上的一组杆，电压源，其向至少一个棒的子集提供交流电压，以产生捕获场 横向和具有开口d并放置在多极离子导向器的出口处的电导极限。 在接近开路导通极限的结束时，提供通过电导限制的会聚连续气体流，其将在离子导向器的中心附近准直的离子转移到低气压区域。 该方法将离子注入离子导向器的升高的气体压力区域，并将会聚的连续气流中的离子输送到低气体压力区域。