Projects per year
We employ the γ3 regime where a near-single-cycle laser pulse is tightly focused, thus providing the highest possible intensity for the minimal energy at a certain laser power. The quantum electrodynamics processes in the course of the interaction of an ultra-intense laser with a solid target are studied via three-dimensional particle-in-cell simulations, revealing the generation of copious γ-photons and electron-positron pairs. A parametric study of the laser polarisation, target thickness and electron number density shows that a radially polarised laser provides the optimal regime for γ-photon generation. By varying the laser power in the range of 1 to 300 PW we find the scaling of the laser to γ-photon energy conversion efficiency. The laser-generated γ-photon interaction with a high- target is further studied using Monte Carlo simulations revealing further electron-positron pair generation and radioactive nuclide creation.
|Journal||Journal of Plasma Physics|
|Publication status||Published - 19 Feb 2022|
Bibliographical noteFunding Information:
The authors would like to acknowledge useful communication with Dr D. Khikhlukha and K. Lezhnin. This work is supported by the projects High Field Initiative (CZ.02.1.01/0.0/0.0/15003/0000449) from the European Regional Development Fund and ‘e-INFRA CZ’ (ID:90140) from the Ministry of Education, Youth and Sports of the Czech Republic. C.P.R. would like to acknowledge funding from EPSRC, grant no. EP/V049461/1. The EPOCH code is in part funded by UK EPSRC grants EP/G054950/1, EP/G056803/1, EP/G055165/1 and EP/M022463/1.
Copyright © The Author(s), 2022.
- Intense particle beam
- Plasma simulation
- 1 Active
The new intensity frontier - exploring quantum electrodynamic plasmas
Ridgers, C. P., Lancaster, K. & Murphy, C. D.
1/05/21 → 30/04/25
Project: Research project (funded) › Research