Enhanced long-distance transport of periodic electron beams in an advanced double layer cone-channel target
Yanling Ji,
Tao Duan,
Weimin Zhou,
Boyuan Li,
Fengjuan Wu,
Zhimeng Zhang,
Bin Ye,
Rong Wang,
Chunrong Wu,
Yongjian Tang
Affiliations
Yanling Ji
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
Tao Duan
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
Weimin Zhou
Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People’s Republic of China
Boyuan Li
Key Laboratory for Laser Plasmas (Ministry of Education) and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
Fengjuan Wu
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
Zhimeng Zhang
Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People’s Republic of China
Bin Ye
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
Rong Wang
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
Chunrong Wu
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
Yongjian Tang
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People’s Republic of China
An enhanced long-distance transport of periodic electron beams in an advanced double layer cone-channel target is investigated using two-dimensional particle-in-cell simulations. The target consists of a cone attached to a double-layer hollow channel with a near-critical-density inner layer. The periodic electron beams are generated by the combination of ponderomotive force and longitudinal laser electric field. Then a stable electron propagation is achieved in the double-layer channel over a much longer distance without evident divergency, compared with a normal cone-channel target. Detailed simulations show that the much better long-distance collimation and guidance of energetic electrons is attributed to the much stronger electromagnetic fields at the inner wall surfaces. Furthermore, a continuous electron acceleration is obtained by the more intense laser electric fields and extended electron acceleration length in the channel. Our investigation shows that by employing this advanced target, both the forward-going electron energy flux in the channel and the energy coupling efficiency from laser to electrons are about threefold increased in comparison with the normal case.
