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1. 发明授权

US09921183B2 Vacuum DMS with high efficiency ion guides 有权
公开(公告)号：US09921183B2
公开(公告)日：2018-03-20
申请号：US15104954
申请日：2014-12-06
申请人： DH Technologies Development Pte. Ltd.
发明人： Bradley B. Schneider , Hassan Javaheri , Thomas R. Covey
IPC分类号： G01N27/06 , H01J49/04 , H01J49/42 , G01N27/62 , H01J49/00 , H01J49/24 , H01J49/06
CPC分类号： G01N27/624 , H01J49/0031 , H01J49/063 , H01J49/066 , H01J49/24
摘要： Differential mobility spectrometry is performed under vacuum. Ions generated in a high pressure region are received from the inlet orifice of a vacuum chamber using a first ion guide located in the vacuum chamber. The first ion guide focuses the generated ions on a DMS device inlet end using a plurality of tapered electrodes. The DMS device is coaxial and adjacent to the first ion guide. The DMS device separates the focused ions using a plurality of electrodes. The inscribed diameter at the DMS device inlet end is larger than the inscribed diameter at the first ion guide exit end to maximize ion transfer. The separated ions are received from the DMS device using a second ion guide coaxial and adjacent to the DMS device. The second ion guide focuses the separated ions on an exit orifice of the vacuum chamber using a plurality of tapered electrodes.

2. 发明授权

US10475633B2 RF ion guide 有权
公开(公告)号：US10475633B2
公开(公告)日：2019-11-12
申请号：US15529623
申请日：2014-11-28
申请人： DH Technologies Development Pte. Ltd.
发明人： Pablo Dominguez , Hassan Javaheri
IPC分类号： H01J49/06 , H01J49/00 , H01J49/24 , H01J49/42
摘要： A mass spectrometer is provided having an ion source for generating ions from a sample in a high pressure region, a first vacuum chamber having an inlet aperture, and an exit aperture. The at least one ion guide can be between the inlet and exit apertures and can include an entrance end and an exit end. The at least one ion guide can have a plurality of electrodes arranged around a central axis defining an ion channel, each of the plurality of electrodes being tapered, a planar surface of each of the plurality of tapered electrodes facing the interior of the at least one ion guide, and the surface gradually being narrowed and tilted inward to provide a smaller inscribed radius at the exit; and a power supply for providing an RF voltage to the at least one ion guide.

3. 发明申请

US20140374589A1 METHOD AND APPARATUS FOR IMPROVED SENSITIVITY IN A MASS SPECTROMETER 审中-公开
标题翻译：在质谱仪中提高灵敏度的方法和装置
公开(公告)号：US20140374589A1
公开(公告)日：2014-12-25
申请号：US14375497
申请日：2013-02-01
申请人： DH Technologies Development Pte. Ltd.
发明人： Hassan Javaheri , Bruce A. Thomson
IPC分类号： H01J49/06 , H01J49/24 , H01J49/00 , H01J49/26
CPC分类号： H01J49/063 , H01J49/0031 , H01J49/0445 , H01J49/062 , H01J49/24 , H01J49/26
摘要： Ions are generated in a high pressure region and are passed into a vacuum chamber having an inlet and an exit aperture. The configuration of the inlet aperture and the pressure difference between the high pressure region and the vacuum chamber provides a supersonic free jet expansion that has a barrel shock of predetermined diameter. At least one ion guide is provided between the inlet and exit apertures having a predetermined cross-section defining an internal volume wherein the cross-section of the at least one ion guide is sized to be at least 50% of the predetermined diameter of the barrel shock of the supersonic free jet expansion. An RF voltage is provided to the at least one ion guide. Radial gas conductance is reduced in a first section of the at least one ion guide for damping shock waves resulting from the supersonic free jet expansion.
摘要翻译：离子在高压区域产生，并且进入具有入口和出口的真空室。入口孔的构型和高压区域与真空室之间的压力差提供超音速自由射流膨胀，其具有预定直径的桶形冲击。至少一个离子导向件设置在入口孔和出口孔之间，其具有限定内部体积的预定横截面，其中至少一个离子导向件的横截面的尺寸被设定为桶的预定直径的至少50％超音速自由射流膨胀的冲击。向至少一个离子导向器提供RF电压。径向气体导电在至少一个离子导向器的第一部分中减小，用于阻尼由超音速自由射流膨胀产生的冲击波。

4. 发明申请

US20170263429A1 RF Ion Guide 审中-公开
公开(公告)号：US20170263429A1
公开(公告)日：2017-09-14
申请号：US15529623
申请日：2014-11-28
申请人： DH Technologies Development Pte. Ltd.
发明人： Pablo Dominguez , Hassan Javaheri
IPC分类号： H01J49/06 , H01J49/42 , H01J49/00 , H01J49/24
CPC分类号： H01J49/063 , H01J49/0031 , H01J49/066 , H01J49/24 , H01J49/4255 , H01J49/426
摘要： A mass spectrometer is provided having an ion source for generating ions from a sample in a high pressure region, a first vacuum chamber having an inlet aperture, and an exit aperture. The at least one ion guide can be between the inlet and exit apertures and can include an entrance end and an exit end. The at least one ion guide can have a plurality of electrodes arranged around a central axis defining an ion channel, each of the plurality of electrodes being tapered, a planar surface of each of the plurality of tapered electrodes facing the interior of the at least one ion guide, and the surface gradually being narrowed and tilted inward to provide a smaller inscribed radius at the exit; and a power supply for providing an RF voltage to the at least one ion guide.

5. 发明申请

US20160320342A1 Vacuum DMS with High Efficiency Ion Guides 有权
标题翻译：具有高效离子导管的真空DMS
公开(公告)号：US20160320342A1
公开(公告)日：2016-11-03
申请号：US15104954
申请日：2014-12-06
申请人： DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
发明人： Bradley B. Schneider , Hassan Javaheri , Thomas R. Covey
IPC分类号： G01N27/62 , H01J49/24 , H01J49/06 , H01J49/00
CPC分类号： G01N27/624 , H01J49/0031 , H01J49/063 , H01J49/066 , H01J49/24
摘要： Differential mobility spectrometry is performed under vacuum. Ions generated in a high pressure region are received from the inlet orifice of a vacuum chamber using a first ion guide located in the vacuum chamber. The first ion guide focuses the generated ions on a DMS device inlet end using a plurality of tapered electrodes. The DMS device is coaxial and adjacent to the first ion guide. The DMS device separates the focused ions using a plurality of electrodes. The inscribed diameter at the DMS device inlet end is larger than the inscribed diameter at the first ion guide exit end to maximize ion transfer. The separated ions are received from the DMS device using a second ion guide coaxial and adjacent to the DMS device. The second ion guide focuses the separated ions on an exit orifice of the vacuum chamber using a plurality of tapered electrodes.
摘要翻译：差示运动光谱法在真空下进行。在真空室中使用位于真空室中的第一离子导向器从真空室的入口孔接收在高压区域中产生的离子。第一离子导向器使用多个锥形电极将产生的离子聚焦在DMS器件入口端上。 DMS装置是同轴的并且与第一离子导向件相邻。 DMS装置使用多个电极分离聚焦的离子。 DMS设备入口端处的内接螺纹直径大于第一离子导出口端的内接直径，以最大化离子转移。使用第二离子导向器从DMS装置接收分离的离子，并且与DMS装置相邻。第二离子导向器使用多个锥形电极将分离的离子聚焦在真空室的出口上。

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