Accession Number : ADA193992

Title :   Effects of Charge Distribution within a Particle Beam on the Sub-Cerenkov Radiation.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Jung, Yun Su

PDF Url : ADA193992

Report Date : Dec 1987

Pagination or Media Count : 91

Abstract : The charge distribution of periodic electron beam pulses generates patterns of sub-Cerenkov radiation distinctive of the distribution of charge with in a bunch. Mapping the radiation pattern from different charge shapes may provide insight into whether charge pulse shapes can be determined from observed radiation patterns. The radiation patterns of Gaussian, Level, and Trapezoidal function were mapped by computer simulation. Near 90 degree to the beam, the radiation patterns of all three charge distributions developed an envelope proportional to the fourier transform of the charge bunch distribution when the wavelength of the emitted radiation was comparable to the size of the bunch. For the Gaussian function, the envelope is Gaussian, for the level function it is a sinc function. Since the envelope for the trapezoidal function in the product of two sinc functions it is more difficult to analyze. This work may provide a basis for determining the charge shape of electron beam pulses from the sub-Cerenkov radiation based on the radiation intensity pattern. Keywords: Form factor; Charge distribution; Envelope function; Profile determination; Theses.

Descriptors :   *ELECTRON BEAMS, *CERENKOV RADIATION, *BEAM FORMING, ELECTROMAGNETIC PULSES, FOURIER TRANSFORMATION, FUNCTIONS, INTENSITY, PARTICLE BEAMS, PULSES, RADIATION PATTERNS, THESES, TIME DOMAIN, COMPUTER PROGRAMS

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE