نوع مقاله : مقاله پژوهشی
نویسندگان
1 سازمان انرؤی اتمی ایران- پژوهشگاه علوم و فنون هسته ای
2 پژوهشکده پلاسما و گداخت
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
The Target Normal Sheath Acceleration (TNSA) method is one of the most efficient techniques for laser ion acceleration. One of the main challenges in optimizing this method is the detrimental impact of laser pre-pulses on the target, which can lead to plasma formation and changes in material density and temperature, resulting in shock wave formation and reduced acceleration efficiency. This study investigates the effects of laser pre-pulse duration and intensity (ASE) and target material on the formation and propagation of shock waves in the proton acceleration process via the TNSA method. The numerical results and one-dimensional hydrodynamic simulations indicate that, at lower ASE intensities (around 1011 W/cm2 and durations of 1 to 2 nanoseconds), the aluminum foil target undergoes minimal displacement, and due to the lack of deformation at the target’s rear side, It is expected that due to the lack of deformation at the target’s rear side, ion acceleration performance will not degrade. However, as the pre-pulse intensity increases, especially in lighter materials such as CH polymer, density variations and target displacement become more pronounced, which reduces the acceleration efficiency. These findings provide a basis for determining optimal conditions for laser acceleration experiments.
کلیدواژهها English
