-
公开(公告)号：US10832900B2
公开(公告)日：2020-11-10
申请号：US16563203
申请日：2019-09-06
申请人： Micromass UK Limited
发明人： Martin Green , Jason Wildgoose , Keith Richardson , Kevin Giles , Daniel Kenny , David Langridge , Richard Moulds
摘要： A mass filter is disclosed having at least one electrode (42-48) comprising an aperture (43) or recess. Voltages are applied to the electrodes (42-48) of the mass filter such that ions having mass to charge ratios in a desired range are confined by the electrodes and are transmitted along and through the mass filter, whereas ions (47,49) having mass to charge ratios outside of said desired range are unstable and pass into the aperture (43) or recess such that they are filtered out by the mass filter. The aperture (43) or recess reduces or eliminates the number of ions that would otherwise impact the electrode surface facing the ion transmission axis and hence reduces degradation of the ion transmission properties of the mass filter.
-
公开(公告)号：US10453667B2
公开(公告)日：2019-10-22
申请号：US15578053
申请日：2016-05-31
申请人： Micromass UK Limited
发明人： Martin Green , Jason Wildgoose , Keith Richardson , Kevin Giles , Daniel Kenny , David Langridge , Richard Moulds
摘要： A mass filter is disclosed having at least one electrode (42-48) comprising an aperture (43) or recess. Voltages are applied to the electrodes (42-48) of the mass filter such that ions having mass to charge ratios in a desired range are confined by the electrodes and are transmitted along and through the mass filter, whereas ions (47,49) having mass to charge ratios outside of said desired range are unstable and pass into the aperture (43) or recess such that they are filtered out by the mass filter. The aperture (43) or recess reduces or eliminates the number of ions that would otherwise impact the electrode surface facing the ion transmission axis and hence reduces degradation of the ion transmission properties of the mass filter.
-
公开(公告)号：US20200075308A1
公开(公告)日：2020-03-05
申请号：US16563203
申请日：2019-09-06
申请人： Micromass UK Limited
发明人： Martin Green , Jason Wildgoose , Keith Richardson , Kevin Giles , Daniel Kenny , David Langridge , Richard Moulds
摘要： A mass filter is disclosed having at least one electrode (42-48) comprising an aperture (43) or recess. Voltages are applied to the electrodes (42-48) of the mass filter such that ions having mass to charge ratios in a desired range are confined by the electrodes and are transmitted along and through the mass filter, whereas ions (47,49) having mass to charge ratios outside of said desired range are unstable and pass into the aperture (43) or recess such that they are filtered out by the mass filter. The aperture (43) or recess reduces or eliminates the number of ions that would otherwise impact the electrode surface facing the ion transmission axis and hence reduces degradation of the ion transmission properties of the mass filter.
-
公开(公告)号：US20180174817A1
公开(公告)日：2018-06-21
申请号：US15578053
申请日：2016-05-31
申请人： Micromass UK Limited
发明人： Martin Green , Jason Wildgoose , Keith Richardson , Kevin Giles , Daniel Kenny , David Langridge , Richard Moulds
CPC分类号： H01J49/4215 , H01J49/063 , H01J49/067 , H01J49/4255
摘要： A mass filter is disclosed having at least one electrode (42-48) comprising an aperture (43) or recess. Voltages are applied to the electrodes (42-48) of the mass filter such that ions having mass to charge ratios in a desired range are confined by the electrodes and are transmitted along and through the mass filter, whereas ions (47,49) having mass to charge ratios outside of said desired range are unstable and pass into the aperture (43) or recess such that they are filtered out by the mass filter. The aperture (43) or recess reduces or eliminates the number of ions that would otherwise impact the electrode surface facing the ion transmission axis and hence reduces degradation of the ion transmission properties of the mass filter.
-
-
-
搜索结果
4 条记录 (耗时 0.014 秒)
