Stability Properties of Azimuthally Symmetric Perturbations in an Intense Electron Beam

reportActive / Technical Report | Accession Number: ADA094535 | Open PDF

Abstract:

The Vlasov-Maxwell equations are used to investigate the stability of azimuthally symmetric perturbations e.g., sausage and hollowing modes of an electron of ion beam immersed in a resistive plasma. The perturbed space charge and plasma current are treated self-consistently for any value of the plasma conductivity. A similar analysis of the hose instability is also carried out. The analysis is carried out for the loss-cone distribution function in which all of the beam electrons have the same value of energy and the same value of axial canonical momentum. In the high conductivity regime, the system is shown to be strongly destabilized by a sufficiently large value of the fractional current neutralization.

Author(s):
Uhm, Han S. ; Lampe, Martin
Author Organization(s):
NAVAL RESEARCH LAB WASHINGTON DC
Descriptive Note:
Memorandum rept.
Supplementary Note:
DOI: 10.21236/ADA094535
Pagination:
0050

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NRL-MR-4441
Contract/Grant Number(s):
N60921-80-WR-W0190, ARPA ORDER-3718
Monitor Series:
DARPA
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_8_Building Partnerships; JCA_8.1_Communicate; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.2_Non-Kinetic Means; JCA_8.1.1_Inform Domestic and Foreign Audiences; JCA_8.1.3_Influence Adversary and Competitor Audiences; JCA_6.1.1_Wired Transmission; JCA_6_Net Centric
Modernization Areas:
Fully Networked C3
Communities of Interest:
Weapons Technologies
Descriptor(s):
*ELECTRON BEAMS, *PERTURBATIONS, *PLASMAS(PHYSICS), CURRENT DENSITY, EIGENVALUES, ELECTRICAL CONDUCTIVITY, FOURIER ANALYSIS, MAXWELLS EQUATIONS, SPACE CHARGE, STABILITY
Field(s)/Group(s):
Nuclear Physics and Elementary Particle Physics, Plasma Physics and Magnetohydrodynamics
Keyword(s):
VLASOV MAXWELL EQUATIONS, PLASMA INSTABILITIES, ION FUSION, HOSE INSTABILITY, SAUSAGE INSTABILITY
Report Date:
1981 Feb 03