A simple way to introduce an adjustable femtosecond pre-pulse to enhance laser-driven proton acceleration

Wang, P.; Gao, Y.; Shou, Y.; Pan, Z.; Xu, S.; Wang, D.; Liu, J.; Cao, Z.; Mei, Z.; Kong, D.; Geng, Y.; Zhao, Y.; Lu, H.; Lin, C.; Yan, X. und Ma, W. (2019): A simple way to introduce an adjustable femtosecond pre-pulse to enhance laser-driven proton acceleration. In: 10Th International Particle Accelerator Conference, Vol. 1350, UNSP 012063

Abstract

We demonstrate a simple way to introduce a femtosecond pre-pulse with adjustable intensity and delay without using an additional compressor to enhance laser-driven proton acceleration. Targets with different thicknesses were shoot at normal incidence by varying the pre-pulses. Experimental results show that significant enhancement of the proton energy can be achieved when the intensity of pre-pulse is optimized. Density profile of preplasma was obtained by hydrodynamic simulations. PIC simulations reveal that the preplasma generated by a femtosecond pre-pulse can increase the intensity of main pulse.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 1742-6588
• Language: English