Fang Tan, Xiao-Hui Zhang, Bin Zhu, Gang Li, Yu-Chi Wu, Ming-Hai Yu, Yue Yang, Yong-Hong Yan, Jing Yang, Wei Fan, Ke-Gong Dong, Feng Lu, Yu-Qiu Gu. Mixed injection mechanism assisted cascaded laser wakefield accelerator [J]. Acta Physica Sinica, 2019, 68(17): 175201-1
- Acta Physica Sinica
- Vol. 68, Issue 17, 175201-1 (2019)
Fig. 1. (a) The gas jet designment and the experimental layout; (b) the side view of the gas density distribution; (c) the one dimensional electron density at a height of 2 mm from the gas jet. (a) 喷嘴设计及实验排布; (b) 气体密度分布侧视二维图; (c) 2 mm高处气体密度对应电子密度的一维分布
Fig. 2. Electron angular distribution for ((a)−(e)) single stage gas jet and ((f)−(j)) dual-stage gas jet.电子束斑 (上)单喷嘴、纯He气结果; (下)双喷嘴无刀边、混合气结果
Fig. 3. The electron angular distribution for (a)−(e) pure He and (f)−(j) the mixed gas of He with 2.5% N2.
电子束斑 (a)−(e) He气结果; (f)−(j) He气混入2.5% N2气结果
Fig. 4. The spot size for shot 0562 when the jet pressure is 650 kPa.喷气气压650 kPa时发射角最小的电子束斑
Fig. 5. Electron energy spectra for continuous 5 shots under jet pressure of 650 kPa.喷气气压650 kPa时连续打靶5发, 磁谱仪测量到的电子能谱
Fig. 6. The Distribution of electrons in longitudinal phase space (x -γ V x ).
等离子体中电子在纵向相空间(x -γ V x )的分布
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Table 1. The emitting direction θx, θy and the FWHM angular spread σx, σy of the electron angular distribution for continuous 6 shots under jet pressure of 650 kPa.
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Table 2. The central energy, charge and energy spread of the electrons for continuous 5 shots when the jet pressure is 650 kPa.
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