GETTER DEVICE FOR LARGE-SIZED ELECTRON TUBE

GETTER DEVICE FOR LARGE-SIZED ELECTRON TUBE

PURPOSE:To provide a getter device capable of giving a certain amount of barium splash which permits satisfactory responding to a super-large electron tube. CONSTITUTION:A ring-shaped vessel 1 of metal with the over-part left open is filled with mixture powder 2 chiefly containing barium-aluminum al...

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Hauptverfasser: OKAI TADAKI, NAKAYAMA SHOJI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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creator OKAI TADAKI
NAKAYAMA SHOJI
description PURPOSE:To provide a getter device capable of giving a certain amount of barium splash which permits satisfactory responding to a super-large electron tube. CONSTITUTION:A ring-shaped vessel 1 of metal with the over-part left open is filled with mixture powder 2 chiefly containing barium-aluminum alloy powder and Ni powder, followed by compression and molding processes. In this getter device, the over-surface of the mixture powder 2 is molded in taper form 4 heightening from the peripheries toward the center, and a plurality of heat emitting members 6 are fixed to the peripheral side-faces of vessel. As a result, temp. rise of the ring-shaped vessel and getter material is made uniformly, and a buoyant phenomenon of the getter material is suppressed, and a sufficient amount of barium splash is obtained.
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CONSTITUTION:A ring-shaped vessel 1 of metal with the over-part left open is filled with mixture powder 2 chiefly containing barium-aluminum alloy powder and Ni powder, followed by compression and molding processes. In this getter device, the over-surface of the mixture powder 2 is molded in taper form 4 heightening from the peripheries toward the center, and a plurality of heat emitting members 6 are fixed to the peripheral side-faces of vessel. As a result, temp. rise of the ring-shaped vessel and getter material is made uniformly, and a buoyant phenomenon of the getter material is suppressed, and a sufficient amount of barium splash is obtained.</abstract><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title GETTER DEVICE FOR LARGE-SIZED ELECTRON TUBE
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