Uniform Laser-Driven Relativistic Electron Layer for Coherent Thomson Scattering

被引：88

作者：

Wu, H. -C. ^{[1
]}

Meyer-ter-Vehn, J. ^{[2
]}

Fernandez, J. ^{[1
]}

Hegelich, B. M. ^{[1
,3
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[3] Univ Munich, Dept Phys, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 23期

关键词：

20;

D O I：

10.1103/PhysRevLett.104.234801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel scheme is proposed to generate uniform relativistic electron layers for coherent Thomson backscattering. A few-cycle laser pulse is used to produce the electron layer from an ultrathin solid foil. The key element of the new scheme is an additional foil that reflects the drive-laser pulse, but lets the electrons pass almost unperturbed. Making use of two-dimensional particle-in-cell simulations and well-known basic theory, it is shown that the electrons, after interacting with both the drive and reflected laser pulses, form a very uniform flyer freely cruising with a high relativistic gamma factor exactly in the drive-laser direction (no transverse momentum). It backscatters the probe light with a full Doppler shift factor of 4 gamma(2). The reflectivity and its decay due to layer expansion are discussed.

引用

页数：4

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