تقرير
Coherent ultra-broadband laser-assisted injection radiation from a laser plasma accelerator
| العنوان: | Coherent ultra-broadband laser-assisted injection radiation from a laser plasma accelerator |
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| المؤلفون: | Miao, B., Feder, L., Elle, J., Goers, A. J., Woodbury, D., Salehi, F., Wahlstrand, J. K., Milchberg, H. M. |
| المصدر: | Phys. Rev. E 98, 043206 (2018) |
| سنة النشر: | 2018 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Accelerator Physics, Physics - Plasma Physics |
| الوصف: | The injection of electrons into a laser wakefield accelerator (LWFA) is observed to generate an intense coherent ultra-broadband and ultrashort pulse radiation flash, consistent with the acceleration of electrons from rest to nearly the speed of light in a distance < ~ 1 $\mu$m. The flash is sufficiently bright to induce large nonlinear refractive index shifts in optical materials; we estimate a source brightness temperature of ~$10^{18}$ K. We present measurements of the flash spectra, coherence, pulse duration, polarization and angular distribution, providing a detailed picture of electron injection dynamics in LWFA. These are characteristic of laser-assisted injection of off-axis electrons, which preserves wake coherence. Comment: 12 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevE.98.043206 |
| URL الوصول: | http://arxiv.org/abs/1807.04165 |
| رقم الأكسشن: | edsarx.1807.04165 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevE.98.043206 |
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