公开(公告)号：US09305733B2

公开(公告)日：2016-04-05

申请号：US14263970

申请日：2014-04-28

Applicant: COLORADO STATE UNIVERSITY RESEARCH FOUNDATION

Inventor： Lauren P. Rand ,  John D. Williams ,  Rafael A. Martinez

IPC: H01J1/14 ,  H01J27/14 ,  H01J1/02 ,  H01J27/08

CPC classification number: H01J1/025 ,  F03H1/0068 ,  H01J1/14 ,  H01J27/08 ,  H01J27/146 ,  H01J2237/08

Abstract: The use of the electride form of 12CaO-7Al2O3, or C12A7, as a low work function electron emitter in a hollow cathode discharge apparatus is described. No heater is required to initiate operation of the present cathode, as is necessary for traditional hollow cathode devices. Because C12A7 has a fully oxidized lattice structure, exposure to oxygen does not degrade the electride. The electride was surrounded by a graphite liner since it was found that the C12A7 electride converts to it's eutectic (CA+C3A) form when heated (through natural hollow cathode operation) in a metal tube.

Abstract translation: 描述了在空心阴极放电装置中使用12CaO-7Al2O3或C12A7的电子形式作为低功函电子发射体。 根据传统的空心阴极器件的需要，不需要加热器来启动本阴极的操作。 因为C12A7具有完全氧化的晶格结构，所以暴露于氧气不会降低电极。 电极被石墨衬垫包围，因为发现当在金属管中加热（通过天然空心阴极操作）时，C12A7电致转变成它的共晶（CA + C3A）形式。

公开(公告)号：US09552952B2

公开(公告)日：2017-01-24

申请号：US15091433

申请日：2016-04-05

Applicant: COLORADO STATE UNIVERSITY RESEARCH FOUNDATION

Inventor： Lauren P. Rand ,  John D. Williams ,  Rafael A. Martinez

IPC: H01J27/14 ,  H01J27/08 ,  H01J1/02 ,  H01J1/14

CPC classification number: H01J1/025 ,  F03H1/0068 ,  H01J1/14 ,  H01J27/08 ,  H01J27/146 ,  H01J2237/08

Abstract: The use of the electride form of 12CaO-7Al2O3, or C12A7, as a low work function electron emitter in a hollow cathode discharge apparatus is described. No heater is required to initiate operation of the present cathode, as is necessary for traditional hollow cathode devices. Because C12A7 has a fully oxidized lattice structure, exposure to oxygen does not degrade the electride. The electride was surrounded by a graphite liner since it was found that the C12A7 electride converts to it's eutectic (CA+C3A) form when heated (through natural hollow cathode operation) in a metal tube.

Abstract translation: 描述了在空心阴极放电装置中使用12CaO-7Al2O3或C12A7的电子形式作为低功函电子发射体。 根据传统的空心阴极器件的需要，不需要加热器来启动本阴极的操作。 因为C12A7具有完全氧化的晶格结构，所以暴露于氧气不会降低电极。 电极被石墨衬垫包围，因为发现当在金属管中加热（通过天然空心阴极操作）时，C12A7电致转变成它的共晶（CA + C3A）形式。

公开(公告)号：US20160217961A1

公开(公告)日：2016-07-28

申请号：US15091433

申请日：2016-04-05

Applicant: COLORADO STATE UNIVERSITY RESEARCH FOUNDATION

Inventor： Lauren P. Rand ,  John D. Williams ,  Rafael A. Martinez

IPC: H01J1/02 ,  H01J1/14

CPC classification number: H01J1/025 ,  F03H1/0068 ,  H01J1/14 ,  H01J27/08 ,  H01J27/146 ,  H01J2237/08

Abstract: The use of the electride form of 12CaO-7Al2O3, or C12A7, as a low work function electron emitter in a hollow cathode discharge apparatus is described. No heater is required to initiate operation of the present cathode, as is necessary for traditional hollow cathode devices. Because C12A7 has a fully oxidized lattice structure, exposure to oxygen does not degrade the electride. The electride was surrounded by a graphite liner since it was found that the C12A7 electride converts to it's eutectic (CA+C3A) form when heated (through natural hollow cathode operation) in a metal tube.

Abstract translation: 描述了在空心阴极放电装置中使用12CaO-7Al2O3或C12A7的电子形式作为低功函电子发射体。 根据传统的空心阴极器件的需要，不需要加热器来启动本阴极的操作。 因为C12A7具有完全氧化的晶格结构，所以暴露于氧气不会降低电极。 电极被石墨衬垫包围，因为发现当在金属管中加热（通过天然空心阴极操作）时，C12A7电致转变成它的共晶（CA + C3A）形式。

公开(公告)号：US20140354138A1

公开(公告)日：2014-12-04

申请号：US14263970

申请日：2014-04-28

Applicant: COLORADO STATE UNIVERSITY RESEARCH FOUNDATION

Inventor： Lauren P. Rand ,  John D. Williams ,  Rafael A. Martinez

IPC: H01J1/02

CPC classification number: H01J1/025 ,  F03H1/0068 ,  H01J1/14 ,  H01J27/08 ,  H01J27/146 ,  H01J2237/08

Abstract: The use of the electride form of 12CaO-7Al2O3, or C12A7, as a low work function electron emitter in a hollow cathode discharge apparatus is described. No heater is required to initiate operation of the present cathode, as is necessary for traditional hollow cathode devices. Because C12A7 has a fully oxidized lattice structure, exposure to oxygen does not degrade the electride. The electride was surrounded by a graphite liner since it was found that the C12A7 electride converts to it's eutectic (CA+C3A) form when heated (through natural hollow cathode operation) in a metal tube.

Abstract translation: 描述了在空心阴极放电装置中使用12CaO-7Al2O3或C12A7的电子形式作为低功函电子发射体。 根据传统的空心阴极器件的需要，不需要加热器来启动本阴极的操作。 因为C12A7具有完全氧化的晶格结构，所以暴露于氧气不会降低电极。 电极被石墨衬垫包围，因为发现当在金属管中加热（通过天然空心阴极操作）时，C12A7电致转变成它的共晶（CA + C3A）形式。