Effect of Electrostatic Field on Energy Conversion Efficiency in High Current Raman Regime Free Electron Laser

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概要

• 論文の詳細を見る

• The effect of the longitudinal electrostatic field on the energy conversion efficiencyis investigated by use of a l-dimensional FEL amplification code. It is found that therepulsive electrostatic interaction prevents the periodic bounce motion of trapped electrons in the ponderomotive potential especially in the high current Raman operationregime. The irregular rotation of the trapped electron increases the untrapped one,which removes the kinetic energy from the radiation field. Resultantly, the energy conversion efficiency averaged over a long wiggler distance stays in a lower level than thatpredicted by the trapping argument. It is also found that the finite beam energyspread reduces the electrostatic force in the nonlinear trapping stage. The reductionof the electrostatic force recovers the periodic electron bounce motion and the associ-ated amplitude oscillation of the radiation field.

• 社団法人日本物理学会の論文
• 1990-01-15

著者

• SHIHO Makoto

  Department of Energy Sciences, Tokyo Institute of Technology

• ODAJIMA Kazuo

  Department of Thermonuclear Fusion Research,Naka Fusion Research Establishment,Japan Atomic Energy R

• MAEDA Hikosuke

  Department of Thermonuclear Fusion Research,Naka Fusion Research Establishment,Japan Atomic Energy R

• Shiho M

  Tokyo Inst. Technol. Yokohama Jpn

• Shiho Makoto

  Naka Fusion Research Establishment Japan Atomic Energy Research Institute

• Shiho Makoto

  Department Of Energy Sciences Tokyo Institute Of Technology

• Maeda Hikosuke

  Department Of Physics Faculty Of Science University Of Tokyo

• Maeda Hikosuke

  Department Of Thermonuclear Fusion Research Naka Fusion Research Establishment Japan Atomic Energy R

• Odajima K

  Department Of Thermonuclear Fusion Research Naka Fusion Research Establishment Japan Atomic Energy R

• Odajima Kazuo

  Department Of Electronic Engineering Faculty Of Engineering Tohoku University:division Of Thermonucl

• KISHIMOTO Yasuaki

  Department of Thermonuclear Fusion Research Naka Fusion Research Establishment,Japan Atomic Energy R

• ODA Hisako

  Department of Thermonuclear Fusion Research Naka Fusion Research Establishment,Japan Atomic Energy R

• Kishimoto Yasuaki

  Department Of Fundamental Energy Science Graduate School Of Energy Science Kyoto University

• Oda Hisako

  Department Of Thermonuclear Fusion Research Naka Fusion Research Establishment Japan Atomic Energy R

• Kishimoto Yasuaki

  Department Of Thermonuclear Fusion Research Naka Fusion Research Establishment Japan Atomic Energy Research Institute

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