Production of negative D- ions by double charge exchange on cesium target
Abstract
A D- beam immersed in a high uniform magnetic field was produced by a double charge exchange of D+ in a supersonic cesium target. The average D- current density is 10-12 mA/sq. cm. at 1 KeV energy. It can be extrapolated to 20-25 mA/sq. cm. at 0.3 KeV. The maximum pulse duration is 5 s. A total D- current of 160 mA at 1 KeV is obtained. The main cesium plasma parameters obtained by interferometry and spectrographic measurements are nsub(e) = 1013 e/sq. cm. and Tsub(e) = 0.1 eV. Then the D- destruction mechanisms by the cesium plasma are limited and the total D- conversion efficiency is comparable to the efficiency determined by the cross-sections ratio at low D+ energy.
- Publication:
-
Unknown
- Pub Date:
- March 1981
- Bibcode:
- 1981pndi.rept.....D
- Keywords:
-
- Cesium;
- Charge Exchange;
- Current Density;
- Ion Charge;
- Negative Ions;
- Plasma Physics;
- Charged Particles;
- Electron Transfer;
- Flux Density;
- Ion Production Rates;
- Plasmas (Physics);
- Atomic and Molecular Physics