Speaker
Description
Based on the NCU 100-TW laser system, we use the hybrid scheme, proposed by Isayama et al, using dual laser pulses to drive 53 MeV protons. The dual pulses are identical (810-nm wavelength, 1.5-J energy, 30-fs pulse duration, and 5-micron spot size). The target is composed of a solid-density target and a near-critical density target.
This hybrid scheme combines the three typical schemes: RPA, LWFA, and TNSA. Under this scheme, the proton is first accelerated by RPA and then injected into the near-critical density target. After that, the second pulse generates wakefields in the near-critical density target to provide the secondary acceleration of the proton. In the third phase, the hot electrons are generated in the target's rear so that the sheath field can enhance the proton energy by TNSA.
