中国物理B ›› 2023, Vol. 32 ›› Issue (1): 15202-015202.doi: 10.1088/1674-1056/ac8e95
Time-resolved K-shell x-ray spectra of nanosecond laser-produced titanium tracer in gold plasmas
Zhencen He(何贞岑)1,2, Jiyan Zhang(张继彦)3, Jiamin Yang(杨家敏)3, Bing Yan(闫冰)4,†, and Zhimin Hu(胡智民)1,‡
- 1 Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;
2 Institute of Modern Physics, Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE), Fudan University, Shanghai 200433, China;
3 Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China;
4 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
Time-resolved K-shell x-ray spectra of nanosecond laser-produced titanium tracer in gold plasmas
Zhencen He(何贞岑)1,2, Jiyan Zhang(张继彦)3, Jiamin Yang(杨家敏)3, Bing Yan(闫冰)4,†, and Zhimin Hu(胡智民)1,‡
- 1 Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;
2 Institute of Modern Physics, Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE), Fudan University, Shanghai 200433, China;
3 Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China;
4 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
摘要： A study of a nanosecond laser irradiation on the titanium-layer-buried gold planar target is presented. The time-resolved x-ray emission spectra of titanium tracer are measured by a streaked crystal spectrometer. By comparing the simulated spectra obtained by using the FLYCHK code with the measured titanium spectra, the temporal plasma states, i.e., the electron temperatures and densities, are deduced. To evaluate the feasibility of using the method for the characterization of Au plasma states, the deduced plasma states from the measured titanium spectra are compared with the Multi-1D hydrodynamic simulations of laser-produced Au plasmas. By comparing the measured and simulated results, an overall agreement for the electron temperatures is found, whereas there are deviations in the electron densities. The experiment-theory discrepancy may suggest that the plasma state could not be well reproduced by the Multi-1D hydrodynamic simulation, in which the radial gradient is not taken into account. Further investigations on the spectral characterization and hydrodynamic simulations of the plasma states are needed. All the measured and FLYCHK simulated spectra are given in this paper as datasets. The datasets are openly available at http://www.doi.org/10.57760/sciencedb.j00113.00032.
中图分类号: (Laser ablation)
- 52.38.Mf