Studies on wave propagation characteristics in ion-pair plasmas

2015 Fiscal Year Final Research Report

• Project/Area Number: 25400538
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: Chuo University
• Principal Investigator: Kono Mitsuo 中央大学, 総合政策学部, 名誉教授 (00038564)
• Research Collaborator: Vranjes Jovo
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: イオン対プラズマ / 分散特性 / 後進波 / 有限ラーマ―半径効果 / 統計力学的運動論 / ジャイロ粘性項 / プラズマ流体論

Outline of Final Research Achievements

Although laboratory studies on physics of matter-antimatter plasmas which are supposed important to explore the dynamical development of the universe were regarded unlikely because of their short life time, a break-through was made by a success of producing stable ion-pair plasmas in laboratories and experimental studies have been started. Among them dispersion relations observed in an ion-pair plasma had been kept unexplained over 10 years in spite of many efforts of theoreticians of plasma physics. Noticing that the theoretical frame work used so far was not appropriate for the plasma in which the ion Lamor radius was compatible with the plasma radius, we have formulated a kinetic theory by taking account of exact ion trajectories in phase space and obtained the theoretical dispersion relations which showed excellent agreement with the observed dispersion relations. Furthermore a fluid theory with the gyro-viscosity is shown to recreate the same dispersion relations of basic modes.

Free Research Field

プラズマ物理学