激光等离子体脉冲软X光标定源
Laser plasma pulse source of soft X-ray for calibration
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摘要: 利用神光Ⅱ上激光与等离子体相互作用得到的软X光，建立了基于多层镜的四通道软X光单色器系统。研究了光源的性能，测量了光源强度、单色器系统稳定性、相应通道的一致性。研究表明，采用多层镜作为脉冲光源的分光元件，可以得到具有较好单色性的强脉冲软X 光标定源。光源的光子能量为253 eV和820 eV，两能道的光源强度分别为1.8×1019 photon/(s·cm2)和3.2×1019 photon/(s·cm2)。在该标定源上可以实现XRD、平面镜、多层镜、透射光栅和滤片的标定。Abstract: The high intensity pulse source of soft X-ray for calibration was formed with multilayer mirror as dispersive elements and laser plasma interaction as X-ray source. The monochromator system with 4 channels was set up and its performance was studied on SGⅡ high power laser facility experiment. The experiments included measurement of source intensity and stability, consistency of related channels and so on. Photon energy of source is 253 eV with 1.8×1019 photon/(s·cm2) source intensity and 820 eV with 3.2×1019 photon/(s·cm2) source intensity. The results show that the source can be used to calibrate XRD, mirror, multilayer, transmission grating and filter.
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Key words:
- soft x-ray /
- calibrating source /
- multilayer mirror /
- source intensity /
- consistency
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