Cesium in hydrogen negative-ion sources.

Authors :: Belchenko, Yu. I.
Davydenko, V. I.
Source :: Review of Scientific Instruments. Mar2006, Vol. 77 Issue 3, p03B702. 3p. 1 Diagram, 5 Graphs.
Publication Year :: 2006
Abstract: Experimental data on the dynamics of cesium particles in the pulsed magnetron and Penning surface-plasma ion sources are presented. Cesium escape from the source emission apertures and the cesium ion current to discharge electrodes was measured. The low value of cesium flux from the source was detected. An intense cesium ion current to the cathode (up to 0.8 A/cm2) was measured. The high value of cesium ion current to surface-plasma source cathode confirms the cesium circulation near the cathode. [ABSTRACT FROM AUTHOR]