公开(公告)号：US4583023A

公开(公告)日：1986-04-15

申请号：US633602

申请日：1984-07-23

Applicant: Herbert W. Friedman ,  Dennis A. Reilly

Inventor： Herbert W. Friedman ,  Dennis A. Reilly

IPC: H01J3/02 ,  H01J11/04

CPC classification number: H01J3/024

Abstract: A preferably fully impregnated dispenser cathode member or the like forming part of an electron tube, electron beam generator or the like is initially heated by any suitable means to a temperature sufficient for low level electron emission from its rear surface. A hot plate member of preferably equal size is disposed behind the cathode and can either be part of or the means for initially heating the cathode member or it can be heated with the cathode member to the aforementioned cathode member's rear surface low level emission temperature. A sustainer voltage is applied between the cathode member and the hot plate member sufficient to draw a current comprising electron flow from the cathode member to the hot plate member across the space separating them. This current flow or back electron beam results in heating of the hot plate member to a temperature sufficient to raise the closely spaced cathode member to, and then maintain it at, the desired emission temperature and simultaneously allow timely termination of the initial heating process since it is needed only initially.

Abstract translation: 形成电子管，电子束发生器等的一部分的优选的完全浸渍的分配器阴极部件等最初被任何合适的装置加热至足以从其后表面进行低电平发射的温度。 优选地相同尺寸的热板构件设置在阴极的后面，并且可以是用于初始加热阴极构件的一部分或者用于初始加热阴极构件的装置，或者它可以被阴极构件加热到上述阴极构件的背面低水平发射温度。 在阴极构件和热板构件之间施加足够的持续电压，以将包括电子流的电流从阴极构件拉出到热板构件，并跨越隔开它们的空间。 该电流或背电子束导致热板构件的加热到足以使紧密排列的阴极构件升高并随后保持在所需发射温度的温度，并同时允许及时终止初始加热过程，因为它 仅在最初才需要