EP1290716A2 - Glimmentladungsquelle für die elementaranalytik - Google Patents
Glimmentladungsquelle für die elementaranalytikInfo
- Publication number
- EP1290716A2 EP1290716A2 EP01940154A EP01940154A EP1290716A2 EP 1290716 A2 EP1290716 A2 EP 1290716A2 EP 01940154 A EP01940154 A EP 01940154A EP 01940154 A EP01940154 A EP 01940154A EP 1290716 A2 EP1290716 A2 EP 1290716A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- glow discharge
- anode
- source
- current
- discharge source
- 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.)
- Withdrawn
Links
Classifications
-
- 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
Definitions
- the invention relates to a glow discharge source (GD) for element analysis on solid material samples by means of optical glow discharge spectroscopy (GD-OES) or glow discharge mass spectroscopy (GD-MS) or secondary neutral particle mass spectroscopy (SNMS).
- GD-OES optical glow discharge spectroscopy
- GD-MS glow discharge mass spectroscopy
- SNMS secondary neutral particle mass spectroscopy
- the glow discharge source according to the invention can be operated with direct voltage or with pulsed direct voltage or with HF voltage.
- the current is usually measured in the voltage source. If the glow discharge sources (RF-GD) operated with an HF voltage are used, the power running to the source or to the matching network and reflected by the source is measured, or the high-frequency current and the high-frequency voltage are measured.
- the invention has for its object to design a glow discharge source for element analysis on solid material samples, in which a glow discharge is generated between the material sample and an anode by means of a connected electrical voltage source, so that the reactive current bl minimizes and the current flowing over the cooling water w f a is not measured.
- a current transformer component for detecting the current flowing between the glow discharge and the voltage source is arranged on or in the anode or the components electrically connected to the anode.
- the current transformer component can be a coil or a Hall probe.
- the current transformer component can also be an ohmic resistor which is inserted into the socket of the anode and connected to an ammeter. If an HF voltage source is used, the current transformer component is advantageously surrounded by an HF shield.
- the glow discharge source according to the invention is distinguished from the known sources by the fact that the current measurement is integrated in the source, since the current flowing in the region of the anode lying on the generator ground is converted into a measurement signal. As a result, only the current fed into the glow discharge or the plasma is measured, thus ensuring reproducible conditions for different material samples, and the quality of the spectrometric results is thus significantly improved.
- Fig. 2 a HF operated according to the invention
- the conventional glow discharge source shown in Fig. 1 for the GD-OES is with and an anode 1 and two Cathode plates 2; 3 constructed, wherein between the cathode plates 2; 3 a material sample 4 to be examined is clamped.
- the cathode plates 2; 3 are equipped with cooling channels through which water flows as a coolant.
- the anode 1 has an anode nozzle 5, which opens to form a space above the material sample 4.
- an RF voltage source 6 is connected to the anode 1 and cathode plates 2; 3.
- a glow discharge 6 is maintained between the material sample 4 and the end of the anode nozzle 5, with which the material sample 4 is removed on its surface by means of sputtering.
- the glow discharge 6, in which the chemical elements sputtered from the material sample 4 are entered, is then analyzed by means of OES.
- the current is measured in a known manner in the feed line 8 in a known manner by means of a current transformer, in conjunction with the falsification of the measured value already indicated by the measured reactive current T i and the current r wa wi flowing off via the cooling water
- the first exemplary embodiment of a glow discharge source according to the invention shown in FIG. 2 differs from the conventional source in that an induction coil 7 is arranged around the anode nozzle 5.
- the induction coil 9 is surrounded by an RF shield 10. With the induction coil 9, only that of the glow discharge on the surface of the Anode socket 5 to the voltage source 6 flowing HF current inductively detected.
- an ohmic resistor 12 is inserted into the anode socket 5. This is connected to an ammeter. With this glow discharge source, too, only the current flowing from the glow discharge to the voltage source is detected.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019257A DE10019257C2 (de) | 2000-04-15 | 2000-04-15 | Glimmentladungsquelle für die Elementanalytik |
DE10019257 | 2000-04-15 | ||
PCT/DE2001/001481 WO2001080282A2 (de) | 2000-04-15 | 2001-04-12 | Glimmentladungsquelle für die elementanalytik |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1290716A2 true EP1290716A2 (de) | 2003-03-12 |
Family
ID=7639217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01940154A Withdrawn EP1290716A2 (de) | 2000-04-15 | 2001-04-12 | Glimmentladungsquelle für die elementaranalytik |
Country Status (4)
Country | Link |
---|---|
US (1) | US6822229B2 (de) |
EP (1) | EP1290716A2 (de) |
DE (1) | DE10019257C2 (de) |
WO (1) | WO2001080282A2 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005003806B3 (de) * | 2005-01-26 | 2006-07-20 | Thermo Electron (Bremen) Gmbh | Glimmentladungsquelle |
CA2737623A1 (en) * | 2008-10-03 | 2010-04-08 | National Research Council Of Canada | Plasma-based direct sampling of molecules for mass spectrometric analysis |
US9426873B2 (en) | 2012-08-28 | 2016-08-23 | Leco Corporation | System and method of determining effective glow discharge lamp current |
FR3007140B1 (fr) * | 2013-06-17 | 2016-06-10 | Horiba Jobin Yvon Sas | Procede et dispositif de spectrometrie de masse a decharge luminescente |
CN106895801A (zh) * | 2015-12-18 | 2017-06-27 | 北京有色金属研究总院 | 一种钕铁硼合金镀层厚度的测定方法 |
CN105958346B (zh) * | 2016-05-24 | 2017-12-19 | 国家电网公司 | 一种调整主变压器中性点与避雷器之间放电间隙的工具 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4853539A (en) * | 1986-06-11 | 1989-08-01 | Vg Instruments Group Limited | Glow discharge mass spectrometer |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8804290D0 (en) * | 1988-02-24 | 1988-03-23 | Vg Instr Group | Glow discharge spectrometer |
DE4100980A1 (de) * | 1991-01-15 | 1992-07-23 | Oechsner Hans Prof Dr Rer Nat | Verfahren und vorrichtung zur oberflaechen- und/oder tiefenprofilanalyse |
CA2116821C (en) * | 1993-03-05 | 2003-12-23 | Stephen Esler Anderson | Improvements in plasma mass spectrometry |
US5408315A (en) * | 1993-07-28 | 1995-04-18 | Leco Corporation | Glow discharge analytical instrument for performing excitation and analyzation on the same side of a sample |
US5751262A (en) * | 1995-01-24 | 1998-05-12 | Micron Display Technology, Inc. | Method and apparatus for testing emissive cathodes |
US5646726A (en) * | 1995-02-24 | 1997-07-08 | Leco Corporation | Atmospheric seal for glow discharge analytical instrument |
US6388381B2 (en) * | 1996-09-10 | 2002-05-14 | The Regents Of The University Of California | Constricted glow discharge plasma source |
JP3842437B2 (ja) * | 1998-05-19 | 2006-11-08 | 理学電機工業株式会社 | グロー放電発光分光分析装置 |
JP2000187002A (ja) * | 1998-12-22 | 2000-07-04 | Horiba Ltd | グロー放電発光分光分析装置 |
GB2369487A (en) * | 2000-11-24 | 2002-05-29 | Secr Defence | Radio frequency ion source |
-
2000
- 2000-04-15 DE DE10019257A patent/DE10019257C2/de not_active Expired - Lifetime
-
2001
- 2001-04-12 EP EP01940154A patent/EP1290716A2/de not_active Withdrawn
- 2001-04-12 US US10/221,915 patent/US6822229B2/en not_active Expired - Lifetime
- 2001-04-12 WO PCT/DE2001/001481 patent/WO2001080282A2/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4853539A (en) * | 1986-06-11 | 1989-08-01 | Vg Instruments Group Limited | Glow discharge mass spectrometer |
Also Published As
Publication number | Publication date |
---|---|
WO2001080282A2 (de) | 2001-10-25 |
DE10019257A1 (de) | 2001-10-25 |
DE10019257C2 (de) | 2003-11-06 |
US20030116706A1 (en) | 2003-06-26 |
US6822229B2 (en) | 2004-11-23 |
WO2001080282A3 (de) | 2002-11-28 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20021112 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
RBV | Designated contracting states (corrected) |
Designated state(s): FR GB |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
17Q | First examination report despatched |
Effective date: 20070911 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20091103 |