Ultrahigh magnetic field diagnostic with spectral profile calculation

• Published in: Journal of quantitative spectroscopy & radiative transfer 2003, Vol.76 (1), p.31-43
• Main Authors: Li, Xiang-dong, Han, Shen-sheng, Wang, Cheng, Xu, Zhi-zhan
• Format: Article
• Language: English
• Subjects: Diagnostic; Spectral profile; Ultrahigh magnetic field
• ISSN: 0022-4073; 1879-1352
• DOI: 10.1016/S0022-4073(02)00044-4

We report the theoretical results on use of neon as a tracer element to measure the multi-megagauss magnetic field, which is induced in the ultrahigh intense laser–matter interactions. The shape of Zeeman splitting of spectral line for 1s2p( 1P 1)→1s 2 transition of He-like neon are calculated for high-intensity laser produced quasi one-components plasma with the consideration of the electron collision broadening, electron collision shift and magnetic field splitting. The results show that all of the Zeeman splitting spectrum can be identified under Rayleigh criterion for the plasma with the electron temperature from 10 to 100 eV , the magnetic field from 10 6 to 10 8 G and the electron density 2×10 20 cm −3 . With both the electron temperature and magnetic field increasing, the requirement for the resolution power of the spectrometer decreases. If a spectrometer with the resolution power of 1/1000 is used, the measurement of the quasistatic magnetic field by Zeeman splitting of spectral lines is applicable when quasistatic magnetic field is larger than some tens of megaGauss.