https://doi.org/10.1140/epjs/s11734-025-01544-9
Regular Article
Measurement of megagauss pulsed magnetic field of a planar target by B-dot probe on the Shenguang-II high-power laser facility
1
Laser Fusion Research Center, China Academy of Engineering Physics, 621900, Mianyang, China
2
Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, 610064, Chengdu, China
3
Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, 519082, Zhuhai, China
a
kuangly0402@sina.com
b
yuyi56@mail.sysu.edu.cn
Received:
8
September
2024
Accepted:
21
February
2025
Published online:
31
March
2025
A differential B-dot probe is designed to diagnose the pulsed magnetic field on the Shenguang-II high-power laser facility. Differential B-dot pair is processed to cancel out common mode noise. On the Shenguang-II facility, a laser pulse with 0.5 kJ energy and the pulse width of 1.0 ns is shot onto a copper planar target, which generates plasma and a pulsed circular self-generated magnetic field. A negative exponential power law between the magnetic field and the distance away from targeting focus is confirmed by the B-dot pair. The negative exponent is – 1.75. Near the laser focus, a magnetic field approximating megagauss can be expected.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
