Intense Radiations from Laser-induced plasma
Relativistic Plasma
which is composed of electrons moving at the speed of light and ions,
an ultra-intense laser pulse is focused on a target (gas, liquid, solid) with an intensity higher than 1018 W/cm2
The interaction of the ultra-intense laser pulse with the relativistic plasma is very strong enough to generate a very high electrostatic field in the plasma, which is much higher than the acceleration field in a conventional RF accelerator by more than 1,000 times. In addition, it happens instantly at a time scale of picosecond or less.
These characteristics make it possible to build a compact-size accelerator in a laboratory scale and to generate radiations with ultra-short pulse width, which can be used for the investigation of ultra-fast phenomena.
Our team is performing researches on the accelerations of ions and electrons utilizing the relativistic plasma. In the case of the ion acceleration, the generation of a high-quality ion beam based on a layered target is main concern. While in the case of the electron acceleration, we are focusing on the usage of a solid target instead of a gas target for better vacuum condition in an expected real application.