Abstract
We present a technique on focusing laser-driven proton beams in an array pattern by employing a copper mesh irradiated by a separate, intense laser pulse. Transient fields are generated on the mesh following the intense interaction. Under the combined effect of collisional scattering and electrical deflections from the mesh, a laser-driven proton beam is split into multiple focused beams with a high density of ∼4 × 109/cm2 after propagation through the charged-up mesh. The particle density within the focused beamlets is up to ∼11 times the initial density of the proton beam. Multiple beam focusing through this approach may open routes for proton beam conditioning, leading to opportunities for multi-beam applications, such as tomographic radiography and proton implantation.
Original language | English |
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Article number | 013509 |
Number of pages | 5 |
Journal | Applied Physics Letters |
Volume | 114 |
Issue number | 1 |
Early online date | 08 Jan 2019 |
DOIs | |
Publication status | Early online date - 08 Jan 2019 |