Plasma and Fusion Research
Volume 2, 015 (2007)
Rapid Communications
- 1)
- Graduate School of Engineering, Osaka University
- 2)
- Institute of Laser Engineering, Osaka University
- 3)
- Department of Physics, University of Nevada
Abstract
We studied the influence of electrostatic and magnetic fields at the rear surface of solid targets on the hot electron emission generated by ultra-intense laser pulses. The number of emitted electrons increases in experiments when a pre-plasma is created on the target rear surface. The formation of the electrostatic potential is clearly retarded in particle-in-cell simulations resulting in the elongation of time window for hot electron emission. The increase in the number of electrons is consistent with the Alfvén current within the elongated time window.
Keywords
ultra-intense laser, hot electron, electrostatic potential, retarded potential, Alfvén current
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References
- [1] M. Tabak et al., Phys. Plasmas 1, 1626 (1994).
- [2] K. Yasuike et al., Rev. Sci. Instrum. 72, 1236 (2001).
- [3] G. Malka et al., Phys. Rev. E 66, 066402 (2002).
- [4] A.J. Mackinnon et al., Phys. Rev. Lett. 86, 1769 (2001).
- [5] H. Alfvén, Phys. Rev. 55, 425 (1939).
- [6] K.A. Tanaka et al., Rev. Sci. Instrum. 76, 013507 (2005).
- [7] Y. Sentoku et al., Phys. Rev. E 65, 046408 (2002).
This paper may be cited as follows:
Toshinori YABUUCHI, Yasuhiko SENTOKU, Takeshi MATSUOKA, Hideaki HABARA, Ken ADUMI, Zenglin CHEN, Ryosuke KODAMA, Kiminori KONDO, Anle LEI, Kunioki MIMA, Motonobu TAMPO, Tsuyoshi TANIMOTO and Kazuo A. TANAKA, Plasma Fusion Res. 2, 015 (2007).