Quasistatic Magnetic Field Generation by an Intense Ultrashort Laser Pulse in Underdense Plasma

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2000,（10）
• 所属期刊栏目: Physics of gases, plasmas, and electric discharges
• 页码范围: 746-748
• 页数: 3页
• 语种: 英文

摘要

The quasistatic magnetic field created in the interaction of intense ultrashort laser pulses with underdense plasmas has been investigated by two-dimensional particle simulation. The relativistic ponderomotive force and plasma wave excited in self-modulation processes can drive intense electron current mainly in the propagation direction.As a result, an azimuthal, multi-mega Gauss order quasi-static magnetic field can be generated around the laserbeam.