GB1088901A - Improvements in or relating to vacuum tubes - Google Patents

Improvements in or relating to vacuum tubes

Info

Publication number
GB1088901A
GB1088901A GB2220064A GB2220064A GB1088901A GB 1088901 A GB1088901 A GB 1088901A GB 2220064 A GB2220064 A GB 2220064A GB 2220064 A GB2220064 A GB 2220064A GB 1088901 A GB1088901 A GB 1088901A
Authority
GB
United Kingdom
Prior art keywords
envelope
molybdenum
film
tube
plate
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
GB2220064A
Inventor
Mervyn Hillier
Reuben Redstone
Donald Sutherland Stark
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB2220064A priority Critical patent/GB1088901A/en
Publication of GB1088901A publication Critical patent/GB1088901A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

1,088,901. Gettering discharge apparatus. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 28, 1965 [May 28, 1964], No. 22200/64. Heading H1D. A method of gettering a vacuum tube, particularly applicable to tubes having an opaque envelope, includes depositing a rare earth metal (which may be yttrium or scandium) on the internal surface of e portion of the tube envelope, and applying external heating to this portion of the envelope to vaporize the metal and cause it to deposit as an ab sorbent film on an adjacent surface. A nickel - plated molyb denum plate 2, upon which a rare earth metal film-preferably of thulium or samariumhas been evaporated, is brazed to a molybdenum tube 3 sealed to a portion 4 of the vacuum tube. The film is vaporized by the application, to the outer surface of the plate, of arc pulses from an argon arc welder, applied successively over the whole area opposite the film, which deposits upon a molybdenum disc 8 supported in the tube facing and adjacent the molybdenum plate. The temperature of the heated portion of the envelope may be estimated by optical pyrometry, or by observation of the molybdenum/nickel eutectic.
GB2220064A 1964-05-28 1964-05-28 Improvements in or relating to vacuum tubes Expired GB1088901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2220064A GB1088901A (en) 1964-05-28 1964-05-28 Improvements in or relating to vacuum tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2220064A GB1088901A (en) 1964-05-28 1964-05-28 Improvements in or relating to vacuum tubes

Publications (1)

Publication Number Publication Date
GB1088901A true GB1088901A (en) 1967-10-25

Family

ID=10175562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2220064A Expired GB1088901A (en) 1964-05-28 1964-05-28 Improvements in or relating to vacuum tubes

Country Status (1)

Country Link
GB (1) GB1088901A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147455A (en) * 1983-09-30 1985-05-09 Outokumpu Oy Activating a gas phase stabilizer in a proportional counter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147455A (en) * 1983-09-30 1985-05-09 Outokumpu Oy Activating a gas phase stabilizer in a proportional counter

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