@article{oai:repo.qst.go.jp:00084557,
 author = {Hadjisolomou, P. and M. Jeong, T. and Valenta, P. and Korn, G. and V. Bulanov, S. and Bulanov, Sergey},
 issue = {1},
 journal = {PHYSICAL REVIEW E},
 month = {Jul},
 note = {We present a regime where an ultraintense laser pulse interacting with a foil target results in high γ-photon conversion efficiency, obtained via three-dimensional quantum-electrodynamics particle-in-cell simulations. A single-cycle laser pulse is used under the tight-focusing condition for obtaining the λ3 regime. The simulations employ a radially polarized laser as it results in higher γ-photon conversion efficiency compared to both azimuthal and linear polarizations. A significant fraction of the laser energy is transferred to positrons, while a part of the electromagnetic wave escapes the target as attosecond single-cycle pulses.},
 title = {Gamma-ray flash generation in irradiating a thin foil target by a single-cycle tightly focused extreme power laser pulse},
 volume = {104},
 year = {2021}
}