JP4692627B2 - 質量分析装置 - Google Patents
質量分析装置 Download PDFInfo
- Publication number
- JP4692627B2 JP4692627B2 JP2008503701A JP2008503701A JP4692627B2 JP 4692627 B2 JP4692627 B2 JP 4692627B2 JP 2008503701 A JP2008503701 A JP 2008503701A JP 2008503701 A JP2008503701 A JP 2008503701A JP 4692627 B2 JP4692627 B2 JP 4692627B2
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- JP
- Japan
- Prior art keywords
- ionization chamber
- filament
- electron
- ionization
- ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/10—Ion sources; Ion guns
- H01J49/14—Ion sources; Ion guns using particle bombardment, e.g. ionisation chambers
- H01J49/147—Ion sources; Ion guns using particle bombardment, e.g. ionisation chambers with electrons, e.g. electron impact ionisation, electron attachment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/622—Ion mobility spectrometry
- G01N27/623—Ion mobility spectrometry combined with mass spectrometry
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electron Tubes For Measurement (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Description
前記フィラメントと前記イオン化室との電位差により該フィラメントと前記電子入射口との間の空間に形成される電場の影響が前記イオン化室の内部にまで及ばない位置まで、前記フィラメントを前記イオン化室から離して設置したものであって、前記電子入射口が形成されたイオン化室内壁面と該イオン化室の中心点との間の距離Daと、前記フィラメントと前記イオン化室の中心点との間の距離Dbとの比率Db/Daを、1.7以上に設定したことを特徴としている。
Claims (2)
- 加熱により熱電子を発生するフィラメントと、該熱電子を内部に導入する電子入射口を有し、その内部において熱電子を利用して試料分子をイオン化するイオン化室と、を含む電子衝撃イオン化法によるイオン源を備える質量分析装置において、
前記フィラメントと前記イオン化室との電位差により該フィラメントと前記電子入射口との間の空間に形成される電場の影響が前記イオン化室の内部にまで及ばない位置まで、前記フィラメントを前記イオン化室から離して設置したものであって、前記電子入射口が形成されたイオン化室内壁面と該イオン化室の中心点との間の距離Daと、前記フィラメントと前記イオン化室の中心点との間の距離Dbとの比率Db/Daを、1.7以上に設定したことを特徴とする質量分析装置。 - 前記フィラメントと前記イオン化室との電位差が10〜200[V]である条件の下で、前記電子入射口の開口面積Aと、該電子入射口が形成されたイオン化室内壁面と前記フィラメントとの間の距離Db−Daとの比率A/(Db−Da)を、0.45〜4.037の範囲に設定したことを特徴とする請求項1に記載の質量分析装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/304372 WO2007102202A1 (ja) | 2006-03-07 | 2006-03-07 | 質量分析装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2007102202A1 JPWO2007102202A1 (ja) | 2009-07-23 |
JP4692627B2 true JP4692627B2 (ja) | 2011-06-01 |
Family
ID=38474651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008503701A Active JP4692627B2 (ja) | 2006-03-07 | 2006-03-07 | 質量分析装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7858933B2 (ja) |
EP (1) | EP1995763A4 (ja) |
JP (1) | JP4692627B2 (ja) |
WO (1) | WO2007102202A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4793440B2 (ja) * | 2006-03-09 | 2011-10-12 | 株式会社島津製作所 | 質量分析装置 |
WO2014164198A1 (en) * | 2013-03-11 | 2014-10-09 | David Rafferty | Automatic gain control with defocusing lens |
US8969794B2 (en) | 2013-03-15 | 2015-03-03 | 1St Detect Corporation | Mass dependent automatic gain control for mass spectrometer |
US11145502B2 (en) | 2019-12-19 | 2021-10-12 | Thermo Finnigan Llc | Emission current measurement for superior instrument-to-instrument repeatability |
CN117637436B (zh) * | 2024-01-26 | 2024-05-07 | 合肥谱佳医学检验实验室有限公司 | 一种三重四极杆质谱仪及自动控制、显示*** |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09190799A (ja) * | 1995-12-29 | 1997-07-22 | Shimadzu Corp | エネルギーアナライザ |
JPH10302660A (ja) * | 1997-04-25 | 1998-11-13 | Jeol Ltd | イオン源 |
JP2003257360A (ja) * | 2002-02-27 | 2003-09-12 | Jeol Ltd | 電子衝撃型イオン源 |
JP2005259482A (ja) * | 2004-03-11 | 2005-09-22 | Shimadzu Corp | イオン化装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3555272A (en) * | 1968-03-14 | 1971-01-12 | Exxon Research Engineering Co | Process for chemical ionization for intended use in mass spectrometry and the like |
US3602752A (en) * | 1969-09-08 | 1971-08-31 | Bendix Corp | Cathode structure with magnetic field producing means |
US5340983A (en) * | 1992-05-18 | 1994-08-23 | The State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University | Method and apparatus for mass analysis using slow monochromatic electrons |
US5756996A (en) * | 1996-07-05 | 1998-05-26 | Finnigan Corporation | Ion source assembly for an ion trap mass spectrometer and method |
JP2002373616A (ja) | 2001-06-14 | 2002-12-26 | Shimadzu Corp | 電子衝撃イオン化方法、及び該方法を用いたイオン化装置 |
US6617771B2 (en) * | 2002-01-24 | 2003-09-09 | Aviv Amirav | Electron ionization ion source |
US6974957B2 (en) * | 2004-02-18 | 2005-12-13 | Nanomat, Inc. | Ionization device for aerosol mass spectrometer and method of ionization |
US7291845B2 (en) * | 2005-04-26 | 2007-11-06 | Varian, Inc. | Method for controlling space charge-driven ion instabilities in electron impact ion sources |
-
2006
- 2006-03-07 JP JP2008503701A patent/JP4692627B2/ja active Active
- 2006-03-07 US US12/281,706 patent/US7858933B2/en active Active
- 2006-03-07 EP EP06715342A patent/EP1995763A4/en not_active Withdrawn
- 2006-03-07 WO PCT/JP2006/304372 patent/WO2007102202A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09190799A (ja) * | 1995-12-29 | 1997-07-22 | Shimadzu Corp | エネルギーアナライザ |
JPH10302660A (ja) * | 1997-04-25 | 1998-11-13 | Jeol Ltd | イオン源 |
JP2003257360A (ja) * | 2002-02-27 | 2003-09-12 | Jeol Ltd | 電子衝撃型イオン源 |
JP2005259482A (ja) * | 2004-03-11 | 2005-09-22 | Shimadzu Corp | イオン化装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1995763A1 (en) | 2008-11-26 |
EP1995763A4 (en) | 2011-09-28 |
JPWO2007102202A1 (ja) | 2009-07-23 |
US7858933B2 (en) | 2010-12-28 |
WO2007102202A1 (ja) | 2007-09-13 |
US20090039252A1 (en) | 2009-02-12 |
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