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

HU Guangyue (胡广月); LIANG Yihan (梁亦寒); SONG Falun (宋法伦); YUAN Peng (袁鹏); WANG Yulin (王雨林); ZHAO Bin (赵斌); ZHENG Jian (郑坚)

doi:10.1088/1009-0630/17/2/07

Plasma Science and Technology > 2015 > 17(2): 134-140. > DOI: 10.1088/1009-0630/17/2/07

HU Guangyue (胡广月), LIANG Yihan (梁亦寒), SONG Falun (宋法伦), YUAN Peng (袁鹏), WANG Yulin (王雨林), ZHAO Bin (赵斌), ZHENG Jian (郑坚). A 7 T Pulsed Magnetic Field Generator for Magnetized Laser Plasma Experiments[J]. Plasma Science and Technology, 2015, 17(2): 134-140. DOI: 10.1088/1009-0630/17/2/07

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

1 Department of Modern Physics & CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei 230026, China 2 Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China

Funds: supported by National Natural Science Foundation of China (Nos. 11105147, 11375197 and 11175179), and the Ministry of Education of China (No. IRT1190)

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Abstract

Abstract

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.
- magnetized laser plasma,
- pulsed strong magnetic field

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