-
公开(公告)号：US06545270B2
公开(公告)日：2003-04-08
申请号：US09805062
申请日：2001-03-14
申请人： James Speakman , Raymond Clive Haines , Patrick James Turner , Thomas Oliver Merren , Stuart Alan Jarvis
发明人： James Speakman , Raymond Clive Haines , Patrick James Turner , Thomas Oliver Merren , Stuart Alan Jarvis
IPC分类号： B01D5944
CPC分类号： H01J49/063 , H01J49/0481 , H01J49/105
摘要： A plasma mass spectrometer comprises a plasma torch (1) for generating ions from a sample introduced into a plasma (2), a nozzle-skimmer interface (3,5) for transmitting said ions into a first evacuated chamber (11), ion guiding means (12), an apertured diaphragm (18) dividing said first evacuated chamber (11) from a second evacuated chamber, and an ion mass-to-charge ratio analyzer in the second chamber for producing a mass spectrum. The ion guiding means comprises a multipole rod-set (13,14,15), means for applying an AC voltage between rods in the set, and means (22) for introducing into said ion guiding means an inert gas selected from the group comprising helium, neon, argon, krypton, xenon and nitrogen so that the partial pressure of said inert gas inside said rod-set is at least 10−3 torr. Interfering peaks in the spectrum, such as Ar+, are thereby reduced.
-
公开(公告)号：US5757012A
公开(公告)日：1998-05-26
申请号：US709089
申请日：1996-09-06
CPC分类号： H01J49/025
摘要： A Faraday Cup charged-particle detector for use in an isotopic ratio mass spectrometer is provided with a charged-particle collector substrate being at least partially composed of carbon produced by burning wood or other grained or cellular organic material so that the substrate surface has an open cellular structure and wherein the cells are of elongated tubular form. The detector is economic to manufacture, reliable and has an increased lifetime.
摘要翻译： 具有用于同位素比质谱仪的法拉第杯带电粒子检测器具有带电粒子收集器基底，其至少部分地由通过燃烧木材或其它粒状或细胞有机材料产生的碳构成，使得基底表面具有开口 细胞结构，其中细胞是细长的管状形式。 检测仪经济，制造可靠，寿命更长。
-
公开(公告)号：US06222185B1
公开(公告)日：2001-04-24
申请号：US08866524
申请日：1997-05-30
申请人： James Speakman , Raymond Clive Haines , Patrick James Turner , Thomas Oliver Merren , Stuart Alan Jarvis
发明人： James Speakman , Raymond Clive Haines , Patrick James Turner , Thomas Oliver Merren , Stuart Alan Jarvis
IPC分类号： B01D5944
CPC分类号： H01J49/063 , H01J49/0481 , H01J49/105
摘要： A plasma mass spectrometer comprises a plasma torch (1) for generating ions from a sample introduced into a plasma (2), a nozzle-skimmer interface (3,5) for transmitting said ions into a first evacuated chamber (11), ion guiding means (12), an apertured diaphragm (18) dividing said first evacuated chamber (11) from a second evacuated chamber, and an ion mass-to-charge ratio analyzer in the second chamber for producing a mass spectrum. The ion guiding means comprises a multipole rod-set (13,14,15), means for applying an AC voltage between rods in the set, and means (22) for introducing into said ion guiding means an inert gas selected from the group comprising helium, neon, argon, krypton, xenon and nitrogen so that the partial pressure of said inert gas inside said rod-set is at least 10−3 torr. Interfering peaks in the spectrum, such as Ar, are thereby reduced.
摘要翻译： 等离子体质谱仪包括用于从引入等离子体（2）中的样品产生离子的等离子体焰炬（1），用于将所述离子传输到第一抽真空室（11）中的喷嘴 - 撇渣器界面（3,5），离子导向 装置（12），在第二室中将所述第一抽真空室（11）与第二抽空室分开的有孔隔膜（18）和离子质荷比分析器产生质谱。 离子引导装置包括多极杆组（13,14,15），用于在组中的杆之间施加AC电压的装置和用于将所述离子引导装置引入到惰性气体的装置（22），所述惰性气体选自包括 氦气，氖气，氩气，氪气，氙气和氮气，使得所述棒组件内的所述惰性气体的分压至少为10 -3乇。 从而降低光谱中的干扰峰如Ar。
-
公开(公告)号：US06707032B2
公开(公告)日：2004-03-16
申请号：US10387417
申请日：2003-03-14
申请人： James Speakman , Raymond Clive Haines , Patrick James Turner , Thomas Oliver Merren , Stuart Alan Jarvis
发明人： James Speakman , Raymond Clive Haines , Patrick James Turner , Thomas Oliver Merren , Stuart Alan Jarvis
IPC分类号： H01J4900
CPC分类号： H01J49/063 , H01J49/0481 , H01J49/105
摘要： A plasma mass spectrometer comprises a plasma torch (1) for generating ions from a sample introduced into a plasma (2), a nozzle-skimmer interface (3,5) for transmitting said ions into a first evacuated chamber (11), ion guiding means (12), an apertured diaphragm (18) dividing said first evacuated chamber (11) from a second evacuated chamber, and an ion mass-to-charge ratio analyzer in the second chamber for producing a mass spectrum. The ion guiding means comprises a multipole rod-set (13,14,15), means for applying an AC voltage between rods in the set, and means (22) for introducing into said ion guiding means an inert gas selected from the group comprising helium, neon, argon, krypton, xenon and nitrogen so that the partial pressure of said inert gas inside said rod-set is at least 10−3 torr. Interfering peaks in the spectrum, such as Ar+, are thereby reduced.
摘要翻译： 等离子体质谱仪包括用于从引入等离子体（2）中的样品产生离子的等离子体焰炬（1），用于将所述离子传输到第一抽真空室（11）中的喷嘴 - 撇渣器界面（3,5），离子导向 装置（12），在第二室中将所述第一抽真空室（11）与第二抽空室分开的有孔隔膜（18）和离子质荷比分析器产生质谱。 离子引导装置包括多极杆组（13,14,15），用于在组中的杆之间施加AC电压的装置和用于将所述离子引导装置引入到惰性气体的装置（22），所述惰性气体选自包括 氦，氖，氩，氪，氙和氮，使得所述棒组内的所述惰性气体的分压至少为10 -3托。 从而降低光谱中的干扰峰，如Ar +。
-
公开(公告)号：US5903002A
公开(公告)日：1999-05-11
申请号：US958608
申请日：1997-10-27
CPC分类号： H01J49/025
摘要： A Faraday Cup charged-particle detector for use in an isotopic ratio mass spectrometer is provided with a charged-particle collector substrate being at least partially composed of carbon produced by burning wood or other grained or cellular organic material so that the substrate surface has an open cellular structure and wherein the cells are of elongated tubular form. The detector is economic to manufacture, reliable and has an increased lifetime.
摘要翻译： 具有用于同位素比质谱仪的法拉第杯带电粒子检测器具有带电粒子收集器基底，其至少部分地由通过燃烧木材或其它粒状或细胞有机材料产生的碳构成，使得基底表面具有开口 细胞结构，其中细胞是细长的管状形式。 检测仪经济实用，可靠，寿命长。
-
-
-
-
搜索结果
5 条记录 (耗时 0.014 秒)
