(The) influence of a return current on the diocotron instability of a relativistic hollow electron beam = 상대론적 공동 전자빔의 다이아코트론 불안정성에 미치는 회귀전류의 영향

the influence of a return current on the diocotron instability of a relativistic hollow electron beam propagating through a background plasma is investigated within the framework of a cold fluid model. The return current density induced in the background plasma is taken to be steadily proportional to the axial electron beam current density. By making use of the linearized fluid-Maxwell equations, a dispersion relation for the eigenfrequencies of the system is derived and used to examine instabilities. It is found that as the fraction of current neutralization increases, lower mode instabilities become dominant while higher mode perturbations are stabilized except the case of very thin beams. It is also observed that for all values of the fraction of current neutralization, increasing of the plasma density gradient or decreasing of the beam thickness is generally destabilizing effect.
Advisors
Choi, Duk-Inresearcher최덕인researcher
Publisher
한국과학기술원
Issue Date
1988
Identifier
66102/325007 / 000861211
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 1988.2, [ [iv], 42 p. ]

URI
http://hdl.handle.net/10203/48180
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=66102&flag=t
Appears in Collection
PH-Theses_Master(석사논문)
Files in This Item
There are no files associated with this item.
  • Hit : 57
  • Download : 0
  • Cited 0 times in thomson ci

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0