The transport process of a relativistic electron beam(REB)in high-density and degenerate plasmas holds significant importance for fast ignition.In this study,we have formulated a comprehensive theoretical model to add...The transport process of a relativistic electron beam(REB)in high-density and degenerate plasmas holds significant importance for fast ignition.In this study,we have formulated a comprehensive theoretical model to address this issue,incorporating quantum degeneracy,charged particle collisions and the effects of electromagnetic(EB)fields.We model the fuel as a uniform density region and particularly focus on the effect of quantum degeneracy during the transport of the REB,which leads to the rapid growth of a self-generated EB field and a subsequently significant self-organized pinching of the REB.Through our newly developed hybrid particle-in-cell simulations,we have observed a two-fold enhancement of the heating efficiency of the REB compared with previous intuitive expectation.This finding provides a promising theoretical framework for exploring the degeneracy effect and the enhanced self-generated EB field in the dense plasma for fast ignition,and is also linked to a wide array of ultra-intense laser-based applications.展开更多
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant Nos.XDA25010100 and XDA25050500)the National Natural Science Foundation of China(Grant No.12075204)+1 种基金the Shanghai Municipal Science and Technology Key Project(Grant No.22JC1401500)Dong Wu acknowledges the sponsorship of the Yangyang Development Fund。
文摘The transport process of a relativistic electron beam(REB)in high-density and degenerate plasmas holds significant importance for fast ignition.In this study,we have formulated a comprehensive theoretical model to address this issue,incorporating quantum degeneracy,charged particle collisions and the effects of electromagnetic(EB)fields.We model the fuel as a uniform density region and particularly focus on the effect of quantum degeneracy during the transport of the REB,which leads to the rapid growth of a self-generated EB field and a subsequently significant self-organized pinching of the REB.Through our newly developed hybrid particle-in-cell simulations,we have observed a two-fold enhancement of the heating efficiency of the REB compared with previous intuitive expectation.This finding provides a promising theoretical framework for exploring the degeneracy effect and the enhanced self-generated EB field in the dense plasma for fast ignition,and is also linked to a wide array of ultra-intense laser-based applications.
