公开(公告)号：US20130126724A1

公开(公告)日：2013-05-23

申请号：US13737771

申请日：2013-01-09

申请人： Alexander A. MAKAROV ,  Eduard V. DENISOV ,  Gerhard JUNG ,  Wilko BALSCHUN ,  Stevan R. HORNING

发明人： Alexander A. MAKAROV ,  Eduard V. DENISOV ,  Gerhard JUNG ,  Wilko BALSCHUN ,  Stevan R. HORNING

IPC分类号： H01J49/28 ,  H01J49/00

CPC分类号： H01J49/4245 ,  H01J49/0027 ,  H01J49/02 ,  H01J49/282 ,  H01J49/406 ,  H01J49/425

摘要： An electrostatic trap such as an orbitrap is disclosed, with an electrode structure. An electrostatic trapping field of the form U′ (r, Φ, z) is generated to trap ions within the trap so that they undergo isochronous oscillations. The trapping field U′(r, Φ, z) is the result of a perturbation W to an ideal field U(r, Φ, z) which, for example, is hypologarithmic in the case of an orbitrap. The perturbation W may be introduced in various ways, such as by distorting the geometry of the trap so that it no longer follows an equipotential of the ideal field U(r, Φ, z), or by adding a distortion field (either electric or magnetic). The magnitude of the perturbation is such that at least some of the trapped ions have an absolute phase spread of more than zero but less than 2 n radians over an ion detection period Tm.

摘要翻译： 公开了诸如轨道捕获器的静电捕获器，具有电极结构。 产生形式为U'（r，Phi，z）的静电捕获场以捕获陷阱内的离子，使得它们经历同步振荡。 捕获场U'（r，Phi，z）是对于理想场U（r，Phi，z）的扰动W的结果，在理想场U（r，Phi，z）中，例如在轨道阱的情况下是对数的。 扰动W可以以各种方式引入，例如通过使陷波器的几何形状变形，使得其不再遵循理想场U（r，Phi，z）的等电位，或者通过添加失真场（电或 磁性）。 扰动的幅度使得至少一些捕获的离子在离子检测周期Tm之后具有大于零但小于2n弧度的绝对相位扩展。