MAGNETIC COMPRESSION OF ELECTRON BEAMS.
Quarterly rept. no. 4, 1 Apr-30 Jun 66,
HUGHES RESEARCH LABS MALIBU CA
Pagination or Media Count:
The objective of this program is to compress a perveance electron beam by a factor of 1000 and to gain understanding of the behavior of the electron beam. The experimental portion of the program is conducted in a flexible demountable beam tester the theoretical study consists of developing techniques for obtaining self-consistent solution for dense thermal electron beams by the use of the distribution function and by extension of paraxial theory. To date, nonparaxial terms such as variation in emission across the cathode, variation in axial velocity with radius, and distortion have been considered. None of the above effects satisfactorily accounts for the observed structure. The experimental program has been confined to a study of the magnetically uncompressed beam, which has an electrostatic area compression of about 80. An unexplained inconsistency has been observed in the beam profiles near the waist variations in beam diameter at the waist amount to about 10. Author
- Particle Accelerators
- Plasma Physics and Magnetohydrodynamics