US3626234A - Glow discharge tube - Google Patents
Glow discharge tube Download PDFInfo
- Publication number
- US3626234A US3626234A US58847A US3626234DA US3626234A US 3626234 A US3626234 A US 3626234A US 58847 A US58847 A US 58847A US 3626234D A US3626234D A US 3626234DA US 3626234 A US3626234 A US 3626234A
- Authority
- US
- United States
- Prior art keywords
- bore
- nipple
- sample
- cathode body
- annular cathode
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
- G01N21/67—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using electric arcs or discharges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
Definitions
- FIG. 1 illustrates diagrammatically an axial sectional view of the glow discharge tube of the invention
- the clearance does not exceed .15 mm.
- a clearance of less than .1 mm. should be selected.
- To exclude a hollow cathode effect it is also necessary to clamp the sample to be analyzed in such a manner that its top or peak is not disposed more than 1 mm. below the upper surface of the disc 21 facing the anode. if this peak projects more than 2.0 mm. from the bore 23 the same is apt to melt during the discharging operation. It is particularly advantageous when the peak of the sample 24 on one hand is not arranged below the upper face of the disc 21 and on the other hand is disposed not more than l.0 mm. above the upper plane of the disc 21.
- a sample holder 19a provided with a plurality of bores 29.
- Such a sample holder is recommended when the wires to be analyzed have a diameter of less than 1.50 mm.
- the employment of a plurality of samples assures that the discharge space will receive a sufficient quantity of atomized substance for the analyzing operation without creating a too high load on the sample material.
- the sample holder 19a illustrated in FIG. 3 is provided with three bores 29 in its upper surface 20a having each a diameter of 0.7 mm. for receiving therein wire pieces each having a diameter of 0.5 mm. which are securely held in said bores 29 by their own resiliency and require no clamping screws.
- the sealing ring in the upper surface 200 is designated with 260.
- Wires having a diameter less than 0.5 mm. are being twisted and then are inserted in the bores of the sample holder by observing the above mentioned limits.
- the advantages of the mentioned glow discharge tube employing the sample holder of the invention resides particularly in the fact that by observing the mentioned additional requirements it is possible to directly analyze wires and wire-shaped bodies with a high accuracy and within a short period of time, whereby owing to the reference to an internal standard the measuring results are independent of the diameter of the samples.
- a glow discharge tube for the analysis of samples comprising wires and wire-shaped metal bodies, said tube comprising a sealed housing containing an inert gas at a glow discharge pressure therein, said housing further comprising a hollow anode body, an annular cathode body having one of its ends attached to, but insulated from, one end of said hollow anode body, a transparent closure plate closing the other end of said hollow anode body, and a test body closing the other end of said annular cathode body, said hollow cathode body having, at its end connected with said annular cathode body, a nipple which extends into the bore of said annular cathode body with concentric clearance and terminating a short distance from said test body which closes said annular cathode body, and means for pressing said test body tightly in engagement with said other end of said annular cathode body, wherein the improvement comprises the employment of a test body made of electrically conductive material which is difficult to atomize, said body being provided in
Landscapes
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Sampling And Sample Adjustment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691910461 DE1910461B2 (de) | 1969-03-01 | 1969-03-01 | Glimmentladungsroehre zur analyse von draehten und drahtfoer migen metallischen koerpern |
Publications (1)
Publication Number | Publication Date |
---|---|
US3626234A true US3626234A (en) | 1971-12-07 |
Family
ID=5726799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US58847A Expired - Lifetime US3626234A (en) | 1969-03-01 | 1970-07-28 | Glow discharge tube |
Country Status (6)
Country | Link |
---|---|
US (1) | US3626234A (xx) |
BE (1) | BE746697R (xx) |
DE (1) | DE1910461B2 (xx) |
FR (1) | FR2037146A6 (xx) |
GB (1) | GB1247502A (xx) |
NL (1) | NL7002950A (xx) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909652A (en) * | 1973-07-06 | 1975-09-30 | Snecma | Luminous discharge cell for spectrographic analysis |
EP0004962A1 (de) * | 1978-04-20 | 1979-10-31 | Vacuumschmelze GmbH | Glimmentladungslampe zur qualitativen und quantitativen Spektralanalyse |
US4367427A (en) * | 1979-03-03 | 1983-01-04 | Vacuumschmelze Gmbh | Glow discharge lamp for qualitative and quantitative spectrum analysis |
US4654504A (en) * | 1983-11-30 | 1987-03-31 | Hewlett-Packard Company | Water-cooled gas discharge detector |
US5086226A (en) * | 1989-05-31 | 1992-02-04 | Clemson University | Device for radio frequency powered glow discharge spectrometry with external sample mount geometry |
US5325021A (en) * | 1992-04-09 | 1994-06-28 | Clemson University | Radio-frequency powered glow discharge device and method with high voltage interface |
US20160118231A1 (en) * | 2014-10-24 | 2016-04-28 | Cemecon Ag | Method and Device for Generating an Electrical Discharge |
US9536725B2 (en) | 2013-02-05 | 2017-01-03 | Clemson University | Means of introducing an analyte into liquid sampling atmospheric pressure glow discharge |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3543077A (en) * | 1967-06-10 | 1970-11-24 | Rsv Prazisionsmessgerate Gmbh | Glow discharge tube for spectral analysis |
-
1969
- 1969-03-01 DE DE19691910461 patent/DE1910461B2/de active Pending
-
1970
- 1970-02-27 FR FR7007170A patent/FR2037146A6/fr not_active Expired
- 1970-02-27 BE BE746697D patent/BE746697R/xx active
- 1970-03-02 NL NL7002950A patent/NL7002950A/xx unknown
- 1970-03-02 GB GB9916/70A patent/GB1247502A/en not_active Expired
- 1970-07-28 US US58847A patent/US3626234A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3543077A (en) * | 1967-06-10 | 1970-11-24 | Rsv Prazisionsmessgerate Gmbh | Glow discharge tube for spectral analysis |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909652A (en) * | 1973-07-06 | 1975-09-30 | Snecma | Luminous discharge cell for spectrographic analysis |
EP0004962A1 (de) * | 1978-04-20 | 1979-10-31 | Vacuumschmelze GmbH | Glimmentladungslampe zur qualitativen und quantitativen Spektralanalyse |
US4367427A (en) * | 1979-03-03 | 1983-01-04 | Vacuumschmelze Gmbh | Glow discharge lamp for qualitative and quantitative spectrum analysis |
US4654504A (en) * | 1983-11-30 | 1987-03-31 | Hewlett-Packard Company | Water-cooled gas discharge detector |
US5086226A (en) * | 1989-05-31 | 1992-02-04 | Clemson University | Device for radio frequency powered glow discharge spectrometry with external sample mount geometry |
WO1992006487A1 (en) * | 1990-10-01 | 1992-04-16 | Clemson University | Device for radio frequency powered glow discharge spectrometry with external sample mount geometry |
US5325021A (en) * | 1992-04-09 | 1994-06-28 | Clemson University | Radio-frequency powered glow discharge device and method with high voltage interface |
US9536725B2 (en) | 2013-02-05 | 2017-01-03 | Clemson University | Means of introducing an analyte into liquid sampling atmospheric pressure glow discharge |
US10269525B2 (en) | 2013-02-05 | 2019-04-23 | Clemson University Research Foundation | Means of introducing an analyte into liquid sampling atmospheric pressure glow discharge |
US20160118231A1 (en) * | 2014-10-24 | 2016-04-28 | Cemecon Ag | Method and Device for Generating an Electrical Discharge |
US9773650B2 (en) * | 2014-10-24 | 2017-09-26 | Cemecon Ag | Method and device for generating an electrical discharge |
Also Published As
Publication number | Publication date |
---|---|
FR2037146A6 (xx) | 1970-12-31 |
DE1910461A1 (de) | 1970-11-26 |
NL7002950A (xx) | 1970-09-03 |
BE746697R (fr) | 1970-07-31 |
DE1910461B2 (de) | 1971-09-23 |
GB1247502A (en) | 1971-09-22 |
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