GB1216496A - High-vacuum gauge - Google Patents

High-vacuum gauge

Info

Publication number
GB1216496A
GB1216496A GB3367167A GB3367167A GB1216496A GB 1216496 A GB1216496 A GB 1216496A GB 3367167 A GB3367167 A GB 3367167A GB 3367167 A GB3367167 A GB 3367167A GB 1216496 A GB1216496 A GB 1216496A
Authority
GB
United Kingdom
Prior art keywords
multiplier
ionizer
bore
tube
radius
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
Application number
GB3367167A
Inventor
Edward Eric Windsor
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.)
Philips Components Ltd
Original Assignee
Mullard Ltd
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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB3367167A priority Critical patent/GB1216496A/en
Priority to FR1573677D priority patent/FR1573677A/fr
Priority to DE19681773879 priority patent/DE1773879A1/en
Publication of GB1216496A publication Critical patent/GB1216496A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/06—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of cold cathodes

Abstract

1,216,496. Ionization manometers; electron multipliers. MULLARD Ltd. 21 June, 1968 [21 July, 1967], No. 33671/67. Heading H1D. An ionization high-vacuum gauge comprises an ionizer and a channel electron multiplier in the form of an electrically resistive tube with an open end adjacent the ionizer. The ionizer is formed by a pointed electrode 15, e.g. of lanthanum hexaboride, and the funnel-shaped end 14 of the multiplier. The multiplier 2 is a curved tube with a radius of curvature less than 24 times the radius of its bore and is made of lead glass with the surface facing the bore reduced to comprise a higher lead content than the remainder of the tube. The surface of the bore adjacent the input end is protected against ion bombardment by a layer of aluminium oxide, 100 Š thick. The output of the multiplier may be at 5 on a separate collector 10. The pressure range of the device is 10<SP>-8</SP> to 10<SP>-10</SP> Torr.
GB3367167A 1967-07-21 1967-07-21 High-vacuum gauge Expired GB1216496A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3367167A GB1216496A (en) 1967-07-21 1967-07-21 High-vacuum gauge
FR1573677D FR1573677A (en) 1967-07-21 1968-07-19
DE19681773879 DE1773879A1 (en) 1967-07-21 1968-07-20 High vacuum manometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3367167A GB1216496A (en) 1967-07-21 1967-07-21 High-vacuum gauge

Publications (1)

Publication Number Publication Date
GB1216496A true GB1216496A (en) 1970-12-23

Family

ID=10355924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3367167A Expired GB1216496A (en) 1967-07-21 1967-07-21 High-vacuum gauge

Country Status (3)

Country Link
DE (1) DE1773879A1 (en)
FR (1) FR1573677A (en)
GB (1) GB1216496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8454911B2 (en) 2005-12-23 2013-06-04 Exxonmobil Chemical Patents Inc. Methane conversion to higher hydrocarbons

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8454911B2 (en) 2005-12-23 2013-06-04 Exxonmobil Chemical Patents Inc. Methane conversion to higher hydrocarbons
US8455707B2 (en) 2005-12-23 2013-06-04 Exxonmobil Chemical Patents Inc. Methane conversion to higher hydrocarbons

Also Published As

Publication number Publication date
DE1773879A1 (en) 1971-10-28
FR1573677A (en) 1969-07-04

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