Title :
Space Charge De-Bunching in Charged-Particle Beams
Author :
Inman, Fred W. ; Muray, J.J.
Author_Institution :
University of the Pacific Stockton, California
fDate :
4/1/1966 12:00:00 AM
Abstract :
One of the factors influencing the properties of a pulsed beam is the growth of the charge bunches due to space charge forces. The growth along the direction of motion of the bunch degrades the time-structure of the pulsed beam and the growth transverse to the direction of motion de-focuses the beam. Although the space charge effect is only important at high current densities, it must be considered a limiting factor in any pulsed beam system. A general method of obtaining the field in the bunch to second order in v/c was developed. From this the motion of charges in the bunch was obtained by numerical integration for the case of a Gaussian distribution of space charge under the assumption that the charge distribution remains Gaussian. Solutions are presented in a dimensionless, graphical form which can easily be scaled for a particular problem.
Keywords :
Current density; Degradation; Electron emission; Equations; Gaussian distribution; Lagrangian functions; Masers; Particle beams; Photomultipliers; Space charge;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1966.4324053