公开(公告)号：US20190074170A1

公开(公告)日：2019-03-07

申请号：US16122527

申请日：2018-09-05

Applicant: SCIENCE AND ENGINEERING SERVICES, LLC

Inventor： Vladimir M. Doroshenko ,  Victor V. Laiko ,  Eugene Moskovets

IPC: H01J49/16 ,  H01J49/24 ,  H01J49/06

Abstract: A system and method for sample analysis using sub-atmospheric pressure (sub-AP) laser ionization. The sub-AP ion source includes a holder with a sample containing analyte molecules, a pulsed laser beam configured to generate ionized species from the sample, an ion extractor adjacent to the holder configured to extract analyte ions from the ionized species by an extraction electric field Es near the sample, an ion funnel structure composed of orifice electrodes located along an ion funnel pathway direction z. The ion funnel structure has an entrance and an exit, the exit being the electrode with the smallest aperture in the structure. This structure is configured for accepting the analyte ions from the ion extractor at the entrance and dragging them toward the exit using an axial electric field Ez along the direction z. The extraction electric field Es is at least partly electrically shielded from the axial electric field Ez.

公开(公告)号：US11107669B2

公开(公告)日：2021-08-31

申请号：US16122527

申请日：2018-09-05

Applicant: SCIENCE AND ENGINEERING SERVICES, LLC

Inventor： Vladimir M. Doroshenko ,  Victor V. Laiko ,  Eugene Moskovets

IPC: H01J49/06 ,  H01J49/16 ,  H01J49/24

Abstract: A system and method for sample analysis using sub-atmospheric pressure (sub-AP) laser ionization. The sub-AP ion source includes a holder with a sample containing analyte molecules, a pulsed laser beam configured to generate ionized species from the sample, an ion extractor adjacent to the holder configured to extract analyte ions from the ionized species by an extraction electric field Es near the sample, an ion funnel structure composed of orifice electrodes located along an ion funnel pathway direction z. The ion funnel structure has an entrance and an exit, the exit being the electrode with the smallest aperture in the structure. This structure is configured for accepting the analyte ions from the ion extractor at the entrance and dragging them toward the exit using an axial electric field Ez along the direction z. The extraction electric field Es is at least partly electrically shielded from the axial electric field Ez.

公开(公告)号：US08796619B1

公开(公告)日：2014-08-05

申请号：US13915264

申请日：2013-06-11

Applicant: Science and Engineering Services, LLC.

Inventor： Vladimir M. Doroshenko ,  Alexander Misharin

IPC: H01J3/00 ,  H01J49/42 ,  H01J49/26

CPC classification number: H01J3/40 ,  H01J49/425

Abstract: An orbital ion trap for electrostatic field ion trapping which includes an electrode structure defining an internal volume of the trap with at least some of electrode surfaces shaped to substantially follow equipotential lines of an ideal quadro-logarithmic electric potential around a longitudinal axis z. The ideal electric potential has an inner potential canyon, an outer potential canyon, and a low potential passage therebetween. The trap includes a trapping voltage supply which provides trapping voltages on the electrodes to generate a trapping electrostatic potential within the internal volume of the trap. The trapping electrostatic potential closely approximates at least a part of the ideal electric potential in at least a part of the internal volume of the trap.

Abstract translation: 一种用于静电场离子捕获的轨道离子阱，其包括限定阱的内部体积的电极结构，其中至少一些电极表面被成形为基本上沿着纵向轴线z围绕理想的二次对数电位的等电位线。 理想的电位具有内部潜在的峡谷，外部的潜在峡谷以及它们之间的低电位通道。 陷阱包括捕获电压源，其在电极上提供捕获电压，以在陷阱的内部体积内产生捕获静电势。 陷阱静电势在阱的内部体积的至少一部分中紧密接近理想电位的至少一部分。

公开(公告)号：US20180076014A1

公开(公告)日：2018-03-15

申请号：US15261383

申请日：2016-09-09

Applicant: SCIENCE AND ENGINEERING SERVICES, LLC

Inventor： Vladimir M. Doroshenko ,  Victor V. Laiko ,  Eugene Moskovets

IPC: H01J49/16 ,  H01J49/00 ,  H01J49/06 ,  H01J49/24 ,  G01N27/62

CPC classification number: H01J49/164 ,  H01J49/066 ,  H01J49/24

Abstract: A system and method for sample analysis using sub-atmospheric pressure (sub-AP) laser ionization. The sub-AP ion source includes a holder with a sample containing analyte molecules, a pulsed laser beam configured to generate ionized species from the sample, an ion extractor adjacent to the holder configured to extract analyte ions from the ionized species by an extraction electric field Es near the sample, an ion funnel structure composed of orifice electrodes located along an ion funnel pathway direction z. The ion funnel structure has an entrance and an exit, the exit being the electrode with the smallest aperture in the structure. This structure is configured for accepting the analyte ions from the ion extractor at the entrance and dragging them toward the exit using an axial electric field Ez along the direction z. The extraction electric field Es is at least partly electrically shielded from the axial electric field Ez.

公开(公告)号：US09171708B1

公开(公告)日：2015-10-27

申请号：US14606495

申请日：2015-01-27

Applicant: Science and Engineering Services, LLC

Inventor： Vladimir M. Doroshenko ,  Victor V. Laiko ,  Eugene Moskovets

IPC: H01J49/16 ,  H01J49/26 ,  H01J49/04

CPC classification number: H01J49/161 ,  H01J49/0004 ,  H01J49/0404 ,  H01J49/107 ,  H01J49/164 ,  H01J49/24

Abstract: An interchangeable ion source for a spectrometer. The ion source includes an interface which mounts the ion source relative to a gas inlet of the spectrometer, a sample holder, a laser which produces a laser beam capable of ionizing the sample at ambient pressure, and an optical system. The ion source includes an equipment chassis which supports the interface, the sample holder, the laser and the optical system as a rigid unit such that the interface, the sample holder, the laser and the optical system remain in alignment upon attachment and detachment of the ion source from the spectrometer and an enclosure which embraces an atmosphere around components of the ion source. In addition, the ion source includes a circulator which circulates at least part of the atmosphere within the enclosure.

Abstract translation: 用于光谱仪的可互换的离子源。 离子源包括相对于光谱仪的气体入口安装离子源的接口，样品保持器，产生能够在环境压力下电离样品的激光束的激光器和光学系统。 离子源包括支撑界面的设备机架，样品架，激光器和光学系统作为刚性单元，使得接口，样品架，激光器和光学系统在安装和拆卸时保持对准 来自光谱仪的离子源和围绕离子源组件的气氛的外壳。 此外，离子源包括使外壳内的至少一部分大气循环的循环器。