FR2294539A1 - Gas ioniser - with microchannel disc for emission of secondary electrons giving ion discharge - Google Patents

Gas ioniser - with microchannel disc for emission of secondary electrons giving ion discharge

Info

Publication number
FR2294539A1
FR2294539A1 FR7441249A FR7441249A FR2294539A1 FR 2294539 A1 FR2294539 A1 FR 2294539A1 FR 7441249 A FR7441249 A FR 7441249A FR 7441249 A FR7441249 A FR 7441249A FR 2294539 A1 FR2294539 A1 FR 2294539A1
Authority
FR
France
Prior art keywords
disc
gas
electrodes
electrons
ionising
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.)
Granted
Application number
FR7441249A
Other languages
French (fr)
Other versions
FR2294539B1 (en
Inventor
Vincent Chalmeton
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.)
Laboratoires dElectronique Philips SAS
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
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 Laboratoires dElectronique et de Physique Appliquee filed Critical Laboratoires dElectronique et de Physique Appliquee
Priority to FR7441249A priority Critical patent/FR2294539A1/en
Publication of FR2294539A1 publication Critical patent/FR2294539A1/en
Application granted granted Critical
Publication of FR2294539B1 publication Critical patent/FR2294539B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/24—Dynodes having potential gradient along their surfaces
    • H01J43/246—Microchannel plates [MCP]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J27/00—Ion beam tubes
    • H01J27/02—Ion sources; Ion guns

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

In an ionising device having a source of electrons in the interior of a sealed evacuated enclosure subsequently filled with a gas atmosphere, with means for circulating the electrons and ionising the gas as well as means for extracting the ions of the plasma so created. (a) the electron source consists of a disc with micro-channels having an internal secondary electron emission on the faces of which a pulsed potential difference of ca 1000V is applied (b) an auxiliary electron source may optionally be arranged in front of the face at the lower potential (called the disc inlet in opposition to the other face which is called the outlet), (c) the means for accelerating the electrons, ionising the gas and extracting the plasma ions comprise a system of electrodes situated on both sides of or within the plasma (d) a pulsed potential difference is applied between these different electrodes simultaneously with or slightly later than that applied to the faces of the disc, the potential difference of the electrodes furthest apart differing by a value of the order of several kilo volts. the potential of on eof these electrodes being in the vicinity of that on the output or input face of the disc. Permits auto-maintenance of electron emission and re-injection into the disc of the energy removed in the electron beam.
FR7441249A 1974-12-13 1974-12-13 Gas ioniser - with microchannel disc for emission of secondary electrons giving ion discharge Granted FR2294539A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7441249A FR2294539A1 (en) 1974-12-13 1974-12-13 Gas ioniser - with microchannel disc for emission of secondary electrons giving ion discharge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7441249A FR2294539A1 (en) 1974-12-13 1974-12-13 Gas ioniser - with microchannel disc for emission of secondary electrons giving ion discharge

Publications (2)

Publication Number Publication Date
FR2294539A1 true FR2294539A1 (en) 1976-07-09
FR2294539B1 FR2294539B1 (en) 1978-12-22

Family

ID=9146172

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7441249A Granted FR2294539A1 (en) 1974-12-13 1974-12-13 Gas ioniser - with microchannel disc for emission of secondary electrons giving ion discharge

Country Status (1)

Country Link
FR (1) FR2294539A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792773A1 (en) * 1999-04-22 2000-10-27 Cit Alcatel Mass spectrometer ionisation gas samples analysis having electron beam generator/focussing and circular microchannel sections producing increased secondary electron beam and ionisation zone directing.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792773A1 (en) * 1999-04-22 2000-10-27 Cit Alcatel Mass spectrometer ionisation gas samples analysis having electron beam generator/focussing and circular microchannel sections producing increased secondary electron beam and ionisation zone directing.
EP1052672A1 (en) * 1999-04-22 2000-11-15 Alcatel Time-of-flight mass spectrometer ion source for gas sample analysis
US6545269B1 (en) 1999-04-22 2003-04-08 Alcatel Ion source for time-of-flight mass spectrometers for analyzing gas samples

Also Published As

Publication number Publication date
FR2294539B1 (en) 1978-12-22

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Legal Events

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ST Notification of lapse