4X SOURCE.

被引：0

作者：

Smith Jr., H.Vernon ^{[1
]}

Allison, Paul ^{[1
]}

Sherman, Joseph D. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, NM, USA, Los Alamos Natl Lab, NM, USA

来源：

IEEE Transactions on Nuclear Science | 1985年 / NS-32卷 / 05期

关键词：

ELECTRIC ARCS - ELECTRIC DISCHARGES - MAGNETIC FIELDS;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A Penning surface-plasma source (SPS) discharge chamber was enlarged 4X in two dimensions. To date, three pulsed discharge modes have been studied: two with noisy arcs ( APP GRTH 20% H- current fluctuations) and one with a quiescent arc ( APP GRTH 1% H- current fluctuations). Lower arc magnetic field and higher H//2 gas flow allow switching from the noisy to the quiescent mode. The noisy modes yield up to 120 mA of 29-keV H- beam; for 110 mA at 29 keV, the two-dimensional normalized rms emittance is 0. 017 multiplied by 0. 018 pi -cm-mrad. The quiescent mode yields 75 mA of 29-keV (H- beam; for 67 mA at 24 keV, the emittance is 0. 011 multiplied by 0. 012 pi -cm-mrad.

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