Wide Band Energy Beamline using Si (111) Crystal Monochromators at BL22XU in SPring‐8
Wide Band Energy Beamline using Si (111) Crystal Monochromators at BL22XU in SPring‐8
复制标题
使用 SPring-8 中 BL22XU 的 Si (111) 晶体单色仪的宽带能量束线
DOI：
10.1063/1.2436207
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发表时间：
2007
影响因子：
4.7
通讯作者：
J. Mizuki
中科院分区：
文献类型：
--
作者：
T. Shobu;K. Tozawa;H. Shiwaku;H. Konishi;T. Inami;T. Harami;J. Mizuki
8年春季，在BL22XU建立了一个新的带有真空波动器的JAEA光束线。宽频带能量X射线有助于压力下的晶体结构研究、共振X射线散射实验、X射线吸收精细结构以及应力测量。使用两套配备液氮冷却Si（111）晶体的双晶单色仪，在光束线上获得了3 ~ 70keV的高X射线通量。在ΔE/E≒10−4时，3、9、25和70keV的光子通量分别约为2 × 1010、3 × 1013、5 × 1012和5 × 1010光子/秒。通过使用MOSTAB（一种反馈控制系统），可以防止液氮冷却系统引起的X射线强度和位置波动。
A new JAEA beamline with an in‐vacuum undulator has been constructed at BL22XU in SPring‐8. The wide band energy X‐rays facilitate crystal structure studies under pressure, resonant X‐ray scattering experiments, X‐ray absorption fine structure as well as stress measurements. The energy range from 3 to 70keV with a high flux of X‐rays has been achieved at the beamline, using two sets of double crystal monochromators equipped with liquid nitrogen cooling Si (111) crystals. The photon flux at 3, 9, 25 and 70keV with ΔE/E ≒ 10−4 are about 2 × 1010, 3 × 1013, 5 × 1012 and 5 × 1010 photons/sec, respectively. Fluctuations in X‐ray intensities and position caused by the liquid nitrogen cooling system have been prevented by using MOSTAB, a feedback control system.