| Autor: |
Zhijun Zhang, Jiansheng Liu, Wentao Wang, Wentao Li, Changhai Yu, Ye Tian, Rong Qi, Cheng Wang, Zhiyong Qin, Ming Fang, Jiaqi Liu, Kazuhisa Nakajima, Ruxin Li, Zhizhan Xu |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
New Journal of Physics, Vol 17, Iss 10, p 103011 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/17/10/103011 |
| Popis: |
By controlling electron injection into the second period of the laser-driven wakefield in a downward density ramp, a high-quality low-energy electron beam can be accelerated in a short segment of high-density plasma. After a second downward density ramp followed by a low-density plasma plateau, the pre-accelerated electron beam can be seeded into the first period of the laser-driven wakefield for cascaded acceleration at an optimized phase. A monoenergetic electron beam with peak energy of ∼1.2 GeV can be generated from plasma with a length of 12 mm and density of 9 × 10 ^17 cm ^−3 , driven by a laser pulse with peak power of 77 TW. By modifying the acceleration stage comprising several density-ascending plasma segments, the peak energy of the quasi-monoenergetic electron beam can be efficiently increased by about 50% via a quasi-phase-stable multiple-cascade acceleration scheme. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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