1. Observation of Zeeman splitting effect in a laser-driven coil
- Author
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Baojun Zhu, Zhe Zhang, Chang Liu, Dawei Yuan, Weiman Jiang, Huigang Wei, Fang Li, Yihang Zhang, Bo Han, Lei Cheng, Shangqing Li, Jiayong Zhong, Xiaoxia Yuan, Bowei Tong, Wei Sun, Zhiheng Fang, Chen Wang, Zhiyong Xie, Neng Hua, Rong Wu, Zhanfeng Qiao, Guiyun Liang, Baoqiang Zhu, Jianqiang Zhu, Shinsuke Fujioka, and Yutong Li
- Subjects
Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
The Zeeman splitting effect is observed in a strong magnetic field generated by a laser-driven coil. The expanding plasma from the coil wire surface is concentrated at the coil center and interacts with the simultaneously generated magnetic field. The Cu I spectral lines at wavelengths of 510.5541, 515.3235, and 521.8202 nm are detected and analyzed. The splittings of spectral lines are used to estimate the magnetic field strength at the coil center as ∼31.4 ± 15.7 T at a laser intensity of ∼5.6 × 1015 W/cm2, which agrees well with measurements using a B-dot probe. Some other plasma parameters of the central plasma disk are also studied. The temperature is evaluated from the Cu I spectral line intensity ratio, while the electron density is estimated from the Stark broadening effect.
- Published
- 2022
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