Double-coil magnetic focusing of the electron beam generated by a plasma-cathode electron source

被引：9

作者：

Bakeev, I. Yu. ^{[1
]}

Klimov, A. S. ^{[1
]}

Oks, E. M. ^{[1
,2
]}

Zenin, A. A. ^{[1
]}

机构：

[1] Tomsk State Univ Control Syst & Radioelect, Tomsk 634050, Russia

[2] RAS, Inst High Current Elect SB, Tomsk 634055, Russia

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2019年 / 90卷 / 02期

关键词：

Electron beams;

D O I：

10.1063/1.5078655

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present the results of our investigations of magnetic focusing of the electron beam generated by a plasma-cathode electron source in the forevacuum pressure range (10-30 Pa). We show that a magnetic double-focusing system employing two separate field coils with the main magnetic coil located close to the beam collector at the focal plane provides effective and efficient focusing of the electron beam. With our e-beam source, this focusing system produces a power density of more than 1 MW/cm(2) at the electron beam focus with an accelerating voltage of 30 kV and a beam current up to 60 mA. For comparison, the maximum beam power density provided by plasma-cathode electron sources at pressures of less than 0.1 Pa is at the level of 10 MW/cm(2). Published under license by AIP Publishing.

引用

页数：7

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