US3626234A - Glow discharge tube - Google Patents

Glow discharge tube Download PDF

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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
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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
Application number
US58847A
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English (en)
Inventor
Werner Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RSV PRAZISIONSMESSGERATE GmbH
Original Assignee
RSV PRAZISIONSMESSGERATE GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RSV PRAZISIONSMESSGERATE GmbH filed Critical RSV PRAZISIONSMESSGERATE GmbH
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    • 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

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  • 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)
US58847A 1969-03-01 1970-07-28 Glow discharge tube Expired - Lifetime US3626234A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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