Periodic spectral modulations of low-energy, low-charge-state carbon ions accelerated in an intense laser-solid interaction

Muhammad Noaman-Ul-Haq, Dong Wu, Hamad Ahmed, Boyuan Li, Xiaohui Yuan, Tongpu Yu, Xulei Ge, Thomas Sokollik, Liming Chen, Zhengming Sheng, Jie Zhang

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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 languageEnglish
Article number043122
Number of pages7
JournalPhysics of Plasmas
Volume25
Issue number4
Early online date27 Apr 2018
DOIs
Publication statusEarly online date - 27 Apr 2018

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Noaman-Ul-Haq, M., Wu, D., Ahmed, H., Li, B., Yuan, X., Yu, T., Ge, X., Sokollik, T., Chen, L., Sheng, Z., & Zhang, J. (2018). Periodic spectral modulations of low-energy, low-charge-state carbon ions accelerated in an intense laser-solid interaction. Physics of Plasmas, 25(4), [043122]. https://doi.org/10.1063/1.5018596