Electron Transport under the Influence of Two Kinds of Friction in an Electron-Deuteron Plasma

• 作者: Mitsuaki Nagata
• 来源期刊: 现代物理(英文)
• 学科: 数学
• 关键词: Conductivity of Electrons in a Perfectly Ionized Plasma Many-Body and Two-Body Collisions Effective Radius of the Coulomb Force
• 年，卷（期）: 2020,（11）
• 页码范围: 1751-1760
• 页数: 10页
• 分类号: O17

摘要

We discuss an electron transport in an ideal plasma which consists of electrons and deuterons. With respect to a frictional force to suppress an unlimited increase of a drift velocity, the Boltzmann equation with the Fokker-Planck collision term takes into consideration only a dynamical frictional force coming from the many-body collisions through the Coulomb force. However, we here bring forward a problem that there may be another frictional force besides the dynamical frictional force. Another frictional force was found in the weakly ionized plasma and appears only in the case where free paths (nearly straight lines in no external force field) can be defined. Then, we have inquired into the existence of physical quantities like free paths (or free times) in the field of the scattering through the Coulomb force and the existence of an effective radius of the Coulomb force of a deuteron.