Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
An unprecedented increase of kinetic energy of laser accelerated heavy ions is demonstrated. Ultrathin gold foils have been irradiated by an ultrashort laser pulse at a peak intensity of 8×1019W/cm2. Highly charged gold ions with kinetic energies up to >200MeV and a bandwidth limited energy distribution have been reached by using 1.3 J laser energy on target. 1D and 2D particle in cell simulations show how a spatial dependence on the ion's ionization leads to an enhancement of the accelerating electrical field. Our theoretical model considers a spatial distribution of the ionization inside the thin target, leading to a field enhancement for the heavy ions by Coulomb explosion. It is capable of explaining the energy boost of highly charged ions, enabling a higher efficiency for the laser-driven heavy ion acceleration.
Язык оригинала | английский |
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Номер статьи | 124801 |
Журнал | Physical Review Letters |
Том | 114 |
Номер выпуска | 12 |
DOI | |
Состояние | Опубликовано - 26 мар 2015 |
ID: 9325363