Enhanced electron yield from a laser-plasma accelerator using high-Z gas jet targets
Abstract
An investigation of the multi-hundred MeV electron beam yield (charge) form helium, nitrogen, neon and argon gas jet plasmas in a laser-plasma wakefield acceleration experiment was carried out. The charge measurement has been made via imaging the electron beam intensity profile on a fluorescent screen into a 14-bit charge coupled device (CCD) which was cross-calibrated with nondestructive electronics-based method. Within given laser and plasma parameters, we found that laser-driven low Z- gas jet targets generate high-quality and well-collimated electron beams with reasonable yields at the level of 10-100 pC. On the other hand, filamentary electron beams which were observed from high-Z gas jets at higher densities reached much higher yield. Evidences for cluster formation were clearly observed in high-Z gases, especially in the argon gas jet target where we received the highest yield of ~ 3 nC
Keywords
Cite
@article{arxiv.1410.2325,
title = {Enhanced electron yield from a laser-plasma accelerator using high-Z gas jet targets},
author = {Mohammad Mirzaie and Nasr A. M. Hafz and Song Li and Thomas Sokollik and Fei He and Ya Cheng and Zhengming Sheng and Jie Zhang},
journal= {arXiv preprint arXiv:1410.2325},
year = {2014}
}