| Autor: |
T W Huang, C M Kim, C T Zhou, M H Cho, K Nakajima, C M Ryu, S C Ruan, C H Nam |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
New Journal of Physics, Vol 21, Iss 1, p 013008 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/aaf8c4 |
| Popis: |
The recent advancement of high-intensity lasers has made all-optical Compton scattering become a promising way to produce ultrashort brilliant γ -rays in an ultra-compact system. However, so far achieved Compton γ -ray sources are limited by low conversion efficiency and spectral intensity. Here we present a highly efficient gamma photon emitter obtained by irradiating a high-intensity laser pulse on a miniature plasma device consisting of a plasma lens and a plasma mirror. This concept exploits strong spatiotemporal laser-shaping process and high-charge electron acceleration process in the plasma lens, as well as an efficient nonlinear Compton scattering process enabled by the plasma mirror. Our full three-dimensional particle-in-cell simulations demonstrate that in this novel scheme, brilliant γ -rays with very high conversion efficiency (higher than 10 ^−2 ) and spectral intensity (∼10 ^9 $\mathrm{photons}/0.1 \% \mathrm{BW}$ ) can be achieved by employing currently available petawatt-class lasers with intensity of 10 ^21 W cm ^−2 . Such efficient and intense γ -ray sources would find applications in wide-ranging areas. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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