Ion acceleration from micrometric targets immersed in an intense laser field
arxiv(2024)
Abstract
We report on an experimental study of proton acceleration by intense laser
irradiation of micrometric bar targets, whose dimensions are transversely
immersed in the laser focal volume and longitudinally smaller than half its
wavelength. Using only 120 mJ of laser energy, we recorded proton energies in
excess of 6 MeV, exceeding those reported with any other experimental method by
a factor of 3. 3D particle-in-cell simulations revealed that the efficient
energy transfer from the diffracted laser fields to electrons on both sides of
the target, combined with its reduced surface area, results in a thicker
electron sheath and higher accelerating electric field gradients. We
demonstrated numerically how this ion acceleration technique opens up the
possibility of laser ion acceleration in multiple stages, allowing manipulation
of the accelerated ion spectrum by optical means.
MoreTranslated text
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined