Development of a WDM platform for charged-particle stopping experiments

[摘要] A platform has been developed for generating large and relatively quiescent plasmas in the warm-dense matter (WDM) regime on the OMEGA laser facility. A cylindrical geometry is used to allow charged-particle probing along the axis. The plasma heating is radiative by L-shell emission generated on the outside of the cylinder. The cylinder drive is characterized with x-ray diagnostics. Possibilities for direct characterization of the plasma temperature are discussed. Finally, the unimportance of electromagnetic fields around the target is demonstrated with proton radiography. We expect this platform to be used extensively in future experiments studying charged-particle stopping in this regime.

[发布机构] Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge; MA; 02139, United States^1;Los Alamos National Laboratory, Los Alamos; NM; 87544, United States^2;University of California Irvine, Irvine; CA; 92697, United States^3;Lawrence Livermore National Laboratory, Livermore; CA; 94550, United States^4;General Atomics, San Diego; CA; 92186, United States^5;SLAC National Accelerator Laboratory, Menlo Park; CA; 94025, United States^6;Sandia National Laboratories, Albuquerque; NM; 87185, United States^7;Laboratory for Laser Energetics, Rochester; NY; 14623, United States^8;University of Michigan, Ann Arbor; MI; 48109, United States^9

[关键词] Cylindrical geometry;L shell;OMEGA Laser Facility;Plasma temperature;Proton radiography;Quiescent plasmas;Warm dense matters;X-ray diagnostics