@article{oai:repo.qst.go.jp:00085323,
 author = {Hadjisolomou, P. and Jeong, T.M. and Valenta, P. and Kolenaty, D. and Versaci, R. and V., Olšovcová and Ridgers, C.P. and Bulanov, Sergey and Bulanov, Sergey},
 issue = {1},
 journal = {Journal of Plasma Physics},
 month = {Feb},
 note = {We employ the λ3 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-Z target is further studied using Monte Carlo simulations revealing further electron–positron pair generation and radioactive nuclide creation.},
 title = {Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target},
 volume = {88},
 year = {2022}
}