Gyrotron experiments employing a field emission array cathode

被引：25

作者：

Garven, M ^{[1
]}

Spark, SN ^{[1
]}

Cross, AW ^{[1
]}

Cooke, SJ ^{[1
]}

Phelps, ADR ^{[1
]}

机构：

[1] UNIV STRATHCLYDE,DEPT PHYS & APPL PHYS,GLASGOW G4 ONG,LANARK,SCOTLAND

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.77.2320

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The design and operation of a field emission array (FEA) cathode and the subsequent demonstration of the first FEA gyrotron are presented. Up to 10 mA from 30 000 tips was achieved reproducibly from each of ten chips in a gyrotron environment, namely, a vacuum 1 x 10(-8) mbar, -50 kV potential with multiple chip operation, The design parameters of the FEA gun were similar to those of a magnetron injection gun with an achievable electron beam current of 50-100 mA and measured power 720 W cw. Coherent microwave radiation was detected in both TE(02) at 30.1 GHz and TE(03) at 43.6 GHz, with a starting current of 1 mA.

引用

页码：2320 / 2323

页数：4

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