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Updated: Jan 22, 2026

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments
Published on: January 28, 2021
Laser focusing equivalence behavior of mass-limited targets in laser particle acceleration
1National Institutes for Quantum Science and Technology, Kansai Institute for Photon Science, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan.
Abstract:
The generation of 200 MeV class protons by irradiating a 25 J laser pulse onto a water target using three-dimensional particle-in-cell simulation is shown. Two types of targets-foil and disk-are evaluated and compared. Disks, which are mass-limited targets, produce ions with higher energy than those produced by foils. This enhancement is attributed to laser focusing equivalent effects in mass-limited targets during the acceleration process. In addition, the disk diameter that generates the maximum energy protons is theoretically derived, which shows good agreement with the simulation result.
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