| Título: | The focusing of cylindrical electron beams with periodic magnetic fields. |
| Autores: | Blevis, Earl. H. |
| Fecha: | 1956 |
| Publicador: | McGill University - MCGILL |
| Fuente: |
 |
| Tipo: | Electronic Thesis or Dissertation |
| Tema: | Physics. |
| Descripción: | The problem of generating long cylindrical electron beams of almost constant diameter has received much attention in recent years. Space charge spreading due to the repulsion of the like charges in the beam must be eliminated by an external focusing field. Sets of widely spaced electrostatic or magnetostatic lenses (15) have been used where charge densities were low, while uniform longitudinal magnetic fields (2, 15) have been used where charge densities were high. J.R. Pierce (5), in a Letter to the Editor of the Journal of Applied Physics, September 1953, suggested that spatially alternating magnetic fields could be used to advantage in place of the uniform magnetic fields. |
| Idioma: | en |
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