A 7 T Pulsed Magnetic Field Generator for Magnetized Laser Plasma Experiments

A pulsed magnetic field generator was developed to study the effect of a magnetic field on the evolution of a laser-generated plasma. A 40 kV pulsed power system delivered a fast （-230 ns）, 55 kA current pulse into a single-turn coil surrounding the laser target, using a capacitor bank of 200 nF, a...

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Bibliographic Details
Published in:Plasma science & technology 2015-02, Vol.17 (2), p.134-140
Main Author: 胡广月 梁亦寒 宋法伦 袁鹏 王雨林 赵斌 郑坚
Format: Article
Language:English
Subjects:
Coils (strip)
Femtosecond
Focusing
Generators
Laser beams
Laser plasmas
Laser targets
Magnetic fields
亥姆霍兹线圈
实验
激光等离子体
激光触发开关
电荷耦合器件
磁化
磁场发生器
脉冲功率系统
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Summary:A pulsed magnetic field generator was developed to study the effect of a magnetic field on the evolution of a laser-generated plasma. A 40 kV pulsed power system delivered a fast （-230 ns）, 55 kA current pulse into a single-turn coil surrounding the laser target, using a capacitor bank of 200 nF, a laser-triggered switch and a low-impedance strip transmission line. A one-dimensional uniform 7 T pulsed magnetic field was created using a Helmholtz coil pair with a 6 mm diameter. The pulsed magnetic field was controlled to take effect synchronously with a nanosecond heating laser beam, a femtosecond probing laser beam and an optical Intensified Charge Coupled Device （ICCD） detector. The preliminary experiments demonstrate bifurcation and focusing of plasma expansion in a transverse magnetic field.
ISSN:1009-0630
DOI:10.1088/1009-0630/17/2/07