Simltaneous Recovery of Electromagnetic Fields in Hohlraums using Tri-Particle Charged-Particle Radiography at OMEGA

An understanding of hohlraum physics is critical to the continued development of inertial confinement fusion (ICF). In hohlraums, self-generated electromagnetic fields play an important role in determining plasma properties such as heat transport; however, details about the magnitude and structure of these fields remain unclear. To explore these questions, experiments at OMEGA using tri-particle (DT³He) monoenergetic proton and deuteron radiography were conducted to probe laser-driven vacuum-filled gold and plastic (CH) hohlraums. Reconstructive methods were utilized _­to recover proton deflection information, and techniques for using multiple simultaneous radiographs were developed to recover information about the structure and strength of both electric and magnetic fields. This work was supported in part by the U.S. DOE, NLUF, and LLE.