公开(公告)号：US20170278689A1

公开(公告)日：2017-09-28

申请号：US15618959

申请日：2017-06-09

Applicant: SHIMADZU CORPORATION

Inventor： Li DING ,  Mikhail SUDAKOV ,  Sumio KUMASHIRO

IPC: H01J49/02 ,  H01J49/42

CPC classification number: H01J49/027 ,  H01J49/0031 ,  H01J49/061 ,  H01J49/406 ,  H01J49/408 ,  H01J49/4245

Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.

公开(公告)号：US20160104609A1

公开(公告)日：2016-04-14

申请号：US14877593

申请日：2015-10-07

Applicant: SHIMADZU CORPORATION

Inventor： Li DING ,  Mikhail SUDAKOV ,  Sumio KUMASHIRO

IPC: H01J49/02 ,  H01J49/06 ,  H01J49/42

CPC classification number: H01J49/027 ,  H01J49/0031 ,  H01J49/061 ,  H01J49/406 ,  H01J49/408 ,  H01J49/4245

Abstract: An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings. The electrodes of the arrays are supplied with substantially the same pattern of voltage whereby the distribution of electrical potential in the space between the arrays is such as to reflect ions isochronously in a flight direction causing them to undergo periodic, oscillatory motion in the space, focused substantially mid-way between the arrays. Amplifier circuitry is used to detect image current having frequency components related to the mass-to-charge ratio of ions undergoing the periodic, oscillatory motion.

Abstract translation: 用于质量分析的静电离子阱包括第一电极阵列和与第一电极阵列间隔开的第二电极阵列。 第一和第二电极阵列可以是由平行条形电极或同心圆形或部分圆形导电环形成的平面阵列。 阵列的电极被提供有基本上相同的电压模式，由此阵列之间的空间中的电位分布使得在飞行方向上等离子地反射离子，使得它们在空间中经历周期性的振荡运动 基本上位于阵列之间。 放大器电路用于检测具有与经历周期性振荡运动的离子的质荷比相关的频率分量的图像电流。