Laser Plasma Soft X-Ray Source in the Water Window Based on Cryogenic Targets
Laser Plasma Soft X-Ray Source in the Water Window Based on Cryogenic Targets
复制标题
基于低温靶的水窗激光等离子体软X射线源
DOI：
10.1002/ecj.12022
复制
发表时间：
2017
影响因子：
0.3
通讯作者：
AMANO SHO
中科院分区：
文献类型：
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作者：
T.Ariyoshi;S.Funaki;K.Sakamoto;A.Baba;and Y.Arima;Amano Sho;AMANO SHO
为了从激光产生的等离子体中在水窗中产生连续重复的软X射线脉冲，已经开发了具有封闭的He气体低温恒温器的一维平移衬底系统，该系统可以连续供应各种低温靶。该系统在15 K的最低温度和12 mm/s的最大上下速度下成功运行。形成了固体Ar和N2层，并研究了它们的水窗光谱。发现来自Ar的发射强度比来自N2的发射强度强约8倍。当使用商业Nd：YAG Q开关激光器以1 J的能量和1 Hz的重复频率照射固体Ar靶时，开发的激光等离子体源在水窗软X射线中表现出140 mW的高平均功率。它可用于各种应用，包括软X射线显微镜，以代替同步加速器设施。
To generate continuously repetitive soft X‐ray pulses in the water window from laser‐produced plasmas, a one‐dimensionally translating substrate system with a closed He gas cryostat that can continuously supply various cryogenic targets has been developed. The system was successfully operated at a lowest temperature of 15 K and at a maximum up‐down speed of 12 mm/s. Solid Ar and N2layers were formed, and the water‐window spectra from them were studied. The emission intensity from Ar was found to be about eight times stronger than that from N2. Developed laser‐plasma source demonstrated high average power of 140 mW in the water‐window soft X‐ray, when a commercial Nd:YAG Q‐switched laser was used to irradiate a solid Ar target with energy of 1 J at a repetition rate of 1 Hz. It can be used for various applications, including soft X‐ray microscopy, in place of synchrotron facilities.