Proton Radiography for Inertial Confinement Fusion

作者：Volpe L^*; Batani D; Baton S; Perez F; Koenig M; Nicolai Ph; Vauzour B; Santos J J

来源：Journal of the Korean Physical Society, 2011, 59(5): 3160-3165.

DOI：10.3938/jkps.59.3160

• Proton radiography
• Laser inertial confinement

Generation of high-intensity and well collimated multi-energetic proton beams from laser-matter interaction extend the possibility for using protons as a diagnostic to image imploding targets in inertial confinement fusion experiments in the framework of the experimental road map of the Hiper project (the European High Power laser Energy Research facility Project). Due to the very large mass densities reached during implosion processes, protons traveling through the target undergo a very large number of collisions which deviate the protons from their original trajectories reducing the proton radiography resolution below our expectations. Here we present a simple analytical model to study the performance of proton radiography as a function of the main experimental parameters, such as the proton beam energies and targets areal density. This approach leads to define two different criteria for proton radiography resolution (called the "strong" and the "weak" conditions) describing different experimental conditions. Finally, numerical simulations using both hydrodynamic and Monte Carlo codes are presented to validate the analytical predictions.

• 出版日期2011-11