| Autor: |
Z-H He, B Hou, J A Nees, J H Easter, J Faure, K Krushelnick, A G R Thomas |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
New Journal of Physics, Vol 15, Iss 5, p 053016 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/15/5/053016 |
| Popis: |
We report on an experimental demonstration of laser wakefield electron acceleration using a sub-TW power laser by tightly focusing 30 fs laser pulses with an 8 mJ pulse energy on a 100 μ m scale gas target. The experiments are carried out at an unprecedented 0.5 kHz repetition rate, allowing ‘real-time’ optimization of accelerator parameters. Well-collimated and stable electron beams with quasi-monoenergetic peaks in the 100 keV range are measured. Particle-in-cell simulations show excellent agreement with the experimental results and suggest an acceleration mechanism based on electron trapping on the density downramp, due to the time-varying phase velocity of the plasma waves. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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