ENERGY LOSS OF AN ELECTRON BEAM IN A PLASMA

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概要

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• Energy loss of an initially uniform 1.1KeV electron beam being injected into a plasma is studied with an electrostatic energy analyser. The plasma is produced by the electron beam itself or by a gas discharge. The dependences of the energy loss on the pressure in the plasma region, on the intensity of the electron beam current, on the beam-plasma interaction length and on the intensity of the gas discharge current is determined experimentally. The total energy loss per an electron of the beam amounts to 100eV for a plasma density of 5×10^9cm^<-3> and a beam current of 4mA. The bunching process of the electron beam interacting with the plasma is analysed on the basis of linear theory as well as non-linear theory. The energy loss can semi-quantitatively be explained by taking account of the coherent interaction between electron beam and plasma. A theory of the latter process which is generalized to treat a series of bunched electrons is appended. This work was performed at Department of Physics, university of Tokyo, under the guidance of Professor Goro Miyamoto from April 1960 to March 1963 as the doctrate work.

• 核融合科学研究所の論文

著者

• Uramoto J.

  Research Information Center Institute Of Plasma Physics Nagoya University

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