Cyclotron maser instability for intense solid electron beams

Journal Article · Thu Feb 01 04:00:00 EST 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.326032· OSTI ID:6503801

Uhm, H S; Davidson, R C

The cyclotron maser instability for a solid relativistic electron beam propagating parallel to a uniform axial magnetic field B/sub 0/e/sub z/ is investigated. The stability analysis is carried out within the framework of the linearized Vlasov-Maxwell equations. It is assumed that ..nu../gamma-circumflexvery-much-less-than1, where ..nu.. is Budker's parameter and gamma-circumflexmc/sup 2/ is the electron energy. Stability properties are investigated for the choice of equilibrium distribution function in which all electrons have the same value of total perpendicular energy, the same value of axial velocity, and a step-function distribution in canonical angular momentum. The instability growth rate is calculated including a determination of the optimum value of the beam radius R/sub 0/ for maximum growth. It is found that the maximum growth rate for a solid beam is comparable to the maximum growth rate for a hollow beam.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 6503801
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 50:2; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BEAM-PLASMA SYSTEMS
BEAMS
CYCLOTRON INSTABILITY
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ENERGY RANGE
INSTABILITY
INSTABILITY GROWTH RATES
LEPTON BEAMS
MICROWAVE RADIATION
PARTICLE BEAMS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
RADIATIONS
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
WAVE PROPAGATION