[Table of Contents]

Plasma and Fusion Research

Volume 2, 015 (2007)

Rapid Communications

Influence of Electrostatic and Magnetic Fields on Hot Electron Emission in Ultra-Intense Laser Matter Interactions
Toshinori YABUUCHI1,2), Yasuhiko SENTOKU3), Takeshi MATSUOKA2), Hideaki HABARA1,2), Ken ADUMI1,2), Zenglin CHEN2), Ryosuke KODAMA1,2), Kiminori KONDO1,2), Anle LEI2), Kunioki MIMA2), Motonobu TAMPO2), Tsuyoshi TANIMOTO1,2) and Kazuo A. TANAKA1,2)
1)
Graduate School of Engineering, Osaka University
2)
Institute of Laser Engineering, Osaka University
3)
Department of Physics, University of Nevada
(Received 15 February 2007 / Accepted 2 April 2007 / Published 2 May 2007)

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

DOI: 10.1585/pfr.2.015

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References

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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).