A new approach to generating negative ion beams
Abstract
The report describes measurements of ion-pair production cross sections for He*(2(1,3)S)-Li, Li-Cs, Li-Na, and Li-Na*(3p) collisions at energies of several keV. Measurements of chemi-ionization cross sections for He*(2(1,3)S)-Li collisions are also mentioned. A method is described for exciting a fraction of the atoms in a Li vapor to the 2p resonance state using a dye laser. The fraction is determined by observing with the laser on and off the ion-pair production of Cl- when a fast Cl beam collides with the vapor.
- Publication:
-
California Univ., San Diego Report
- Pub Date:
- November 1987
- Bibcode:
- 1987ucsd.rept.....N
- Keywords:
-
- Ion Beams;
- Ionization Cross Sections;
- Negative Ions;
- Pair Production;
- Particle Collisions;
- Reaction Kinetics;
- Cesium;
- Dye Lasers;
- Helium;
- Lithium;
- Metal Vapors;
- Molecular Beams;
- Sodium;
- Atomic and Molecular Physics