Generation of giga-electron-volt proton beams by micronozzle acceleration
Abstract
Our proposed ion acceleration scheme, micronozzle acceleration (MNA), generates proton beams with extremely high kinetic energies on the giga-electron-volt (GeV) order. The underlying physics and performance of MNA are studied with two-dimensional particle-in-cell simulations. In MNA targets, a micron-sized hydrogen rod is embedded inside a hollow micronozzle. Subsequent illumination of the target along the symmetric axis by an ultraintense ultrashort laser pulse forms a strong electrostatic field with a long lifetime and an extensive space around the downstream tail of the nozzle. The electric field significantly amplifies the kinetic energies of the accelerated protons, and > GeV protons are generated at an applied laser intensity of 10^22 W/cm^2 .
Keywords
Cite
@article{arxiv.2512.00803,
title = {Generation of giga-electron-volt proton beams by micronozzle acceleration},
author = {M. Murakami and D. Balusu and S. Maruyama and Y. Murakami and B. Ramakrishna},
journal= {arXiv preprint arXiv:2512.00803},
year = {2025}
}