Studies on Focusing Performances of the Bent Crystal Monochromator

Zheng Wenli; Jiang Xiaoming; Wu Jiayang; Jing Yuhui; Liu Gongchun

Chinese Physics C> 1995, Vol. 19> Issue(9) : 858-864

Studies on Focusing Performances of the Bent Crystal Monochromator

Institute of High Energy Physics , The Chinese Academy of Sciences , Beijing,100039

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Abstract：
The triangular crystal is used as monochromator on 4W1C beamline at Beijing Synchrotron Kadiation Facility. Three crystals of Si(111), Si(220) and Si(422) with an oblique-cut angle of 12.16° are employed at the same Bragg angle 23.65°to select monochromatic X-rays with wavelengths of 0.252nm, 0.154nm and 0.089nm,respectively. The triangular crystal is bent to a cylindrical shape to focus the beam in the horizontal direction and to provide focusing monochromatic X-rays for the diffuse scattering station. The theoretic calculations and SHADOW ray-tracing of the optical system are in good agreement with the experimental results.

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Zheng Wenli, Jiang Xiaoming, Wu Jiayang, Jing Yuhui and Liu Gongchun. Studies on Focusing Performances of the Bent Crystal Monochromator[J]. Chinese Physics C, 1995, 19(9): 858-864.

Zheng Wenli, Jiang Xiaoming, Wu Jiayang, Jing Yuhui and Liu Gongchun. Studies on Focusing Performances of the Bent Crystal Monochromator[J]. Chinese Physics C, 1995, 19(9): 858-864. shu

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Received: 1900-01-01
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Studies on Focusing Performances of the Bent Crystal Monochromator

Corresponding author: Zheng Wenli,

Institute of High Energy Physics , The Chinese Academy of Sciences , Beijing,100039

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1995-09-05

Abstract: The triangular crystal is used as monochromator on 4W1C beamline at Beijing Synchrotron Kadiation Facility. Three crystals of Si(111), Si(220) and Si(422) with an oblique-cut angle of 12.16° are employed at the same Bragg angle 23.65°to select monochromatic X-rays with wavelengths of 0.252nm, 0.154nm and 0.089nm,respectively. The triangular crystal is bent to a cylindrical shape to focus the beam in the horizontal direction and to provide focusing monochromatic X-rays for the diffuse scattering station. The theoretic calculations and SHADOW ray-tracing of the optical system are in good agreement with the experimental results.

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