Accession Number:

ADA021980

Title:

Energy Moment Method for Straggling of an Ultra-Relativistic Electron Beam.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

• Lampe,Martin

Report Date:

1976-02-01

Pagination or Media Count:

18.0

Abstract:

High energy electrons propagating in matter are subject to energy loss due to single particle interactions, i.e. bremsstrahlung radiation and ionizing collisions with ambient atoms. In addition, if the electrons propagate in a high current beam, inductive electric fields arising from the current changes at the front and rear of the beam pulse can have a significant retarding effect on the beam electrons energy extracted in this way can be dissipated resistively in currents driven in the ambient medium in some cases, some of the energy goes into accelerating electrons at the pulse tail. As a result of these three mechanisms, the mean energy of propagating electrons falls off, and an energy spread develops. In general, one can define an energy spectrum fE, t, as a function of propagation distance t.

Descriptors:

• *ELECTRON BEAMS
• *WAVE PROPAGATION
• *GAS IONIZATION
• *MAGNETOHYDRODYNAMICS
• *BREMSSTRAHLUNG
• INTERACTIONS
• MONTE CARLO METHOD
• HIGH ENERGY
• APPROXIMATION(MATHEMATICS)
• POLYNOMIALS
• LOSSES
• SECONDARY EMISSION
• ELECTRON TRANSFER
• DISTRIBUTION FUNCTIONS
• PINCH EFFECT
• PARTICLE TRAJECTORIES

Subject Categories:

• Statistics and Probability
• Nuclear Physics and Elementary Particle Physics
• Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE