High performance streaked X-ray spectrometer for research of laser-produced plasmas
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摘要: 在激光等离子体研究中，电磁脉冲干扰对实验结果影响很大，为了减小这一影响，设计一款新的扫描晶体谱仪，整个机身设计成几乎全密闭的良导体。该晶体谱仪通过更换晶体和调整入射角可以获得较宽范围的测量窗口。在X光光谱为2.5~3.5 keV范围内的测量试验中，该扫描晶体谱仪的谱分辨能力为13（在2960 eV），时间分辨率为10 ps。其谱分辨和时间分辨可以满足对激光等离子体的研究。Abstract: In order to mitigate the effect of the strong electromagnetic pulse, which produces laser-plasma interactions, we designed a new streaked X-ray spectrometer (SXS) enclosed within a well-sealed, electromagnetic interference-free cavity. The SXS can cover a wide selection of spectral windows using interchangeable Bragg crystals and by appropriate adjustment of the Bragg angle. The SXS has been used to observe time-resolved X-ray spectrum in the 2.5 keV to 3.5 keV photon-energy range, resulting in a demonstrated spectral resolution of about 13 at 2960 eV with a time resolution of 10 ps. The observed time and spectral resolutions demonstrate the applicability of the SXS for studies of laser-produced plasmas.
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Key words:
- streaked X-ray spectrometer /
- X-ray spectrum /
- plasmas /
- Bragg crystal
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