Abstract
We report experimental observation of periodic modulations in the energy distribution of C 1+ ions dominantly accelerated in the interaction of a 15 μm thick tape target with intense laser pulses of intensities ∼10 18 W/cm 2 in a defocused configuration. Moreover, the influence of laser intensity on the acceleration of low- and high-charge-state species of carbon ions is observed. Two-dimensional (2D) particle-in-cell simulations elucidate the dynamics of ionization-dependent acceleration of different species in different laser focusing conditions. By comparison, 1D simulations suggest that the modulations of C 1+ ions are due to the longitudinal recirculation dynamics of hot electrons in the target, which modulates the sheath field for acceleration of C 1+ ions.
Original language | English |
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Article number | 043122 |
Number of pages | 7 |
Journal | Physics of Plasmas |
Volume | 25 |
Issue number | 4 |
Early online date | 27 Apr 2018 |
DOIs | |
Publication status | Early online date - 27 Apr 2018 |
ASJC Scopus subject areas
- Condensed Matter Physics