Zeeman splitting of laser-driven soft x-ray laser line by the enhancement of magnetic field in plasma

22nd International Conference on Spectral Line Shapes

Kawachi, T.^1 ; Hasegawa, N.^1 ; Iwamae, A.^2 ; Yoneda, H.^3

Quantum Beam Science Center, Japan Atomic Energy Agency (JAEA), 8-1-7, Umemidai, Kizugawa, Kyoto

619-0215, Japan^1

Faculty of Engineering, Fukui University, 3-9-1Bunkyo, Fukui

910-8517, Japan^2

Institute of Laser Science, University of Electro-Communications, 1-5-1, Chofu, Tokyo

182, Japan^3

关键词: External magnetic field;    Intense laser-plasma interactions;    Molybdenum ions;    Plasma columns;    Polarization components;    Pulsed power supply;    Soft X-ray laser;    Zeeman splittings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012038/pdf
DOI  :  10.1088/1742-6596/548/1/012038

来源: IOP

【 摘 要 】

We observed a laser-driven plasma soft x-ray laser (SXRL) line at the wavelength of 18.895 nm from the nickel-like molybdenum ions under the existence of external magnetic field. In this experiment, 4 mm-diameter magnetic coil driven by an electrical pulsed power supply provided the external magnetic field of 15 T along the direction of the plasma column, and we could obtain the left-handed circular and right-handed circular polarization components separately. The experimental Zeeman splitting indicated that the strength of the magnetic field was enhanced by a factor of more than 10 than that of the applied field, which implied that the compression of magnetic field occurred in the dynamics of intense laser-plasma interaction.