Spherical Crystal Based on X-Ray Fluorescence Imaging with High Spectral Resolution and Full Field of View

Bozhong Tan; Qingguo Yang; Liangliang Du; Ran An; Dongbing Liu; Limin Meng

doi:10.3788/AOS201939.1134001

Acta Optica Sinica, Volume. 39, Issue 11, 1134001(2019)

Spherical Crystal Based on X-Ray Fluorescence Imaging with High Spectral Resolution and Full Field of View

Bozhong Tan, Qingguo Yang^*, Liangliang Du, Ran An, Dongbing Liu, and Limin Meng

Author Affiliations

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China

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Figures & Tables(7)

Fig. 1. Geometric diagram of spherical crystal based on X-ray fluorescence imaging system in meridional plane

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Fig. 2. Diagrams of geometric magnification ratio. (a) Sagittal plane; (b) meridional plane

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Fig. 3. Geometric relationship between l_m and θ_RC

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Fig. 4. Two possible cases for calculating the FOV. (a) P is on the right of P₀; (b) P is on the left of P₀

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Fig. 5. FOV and spectral bandwidth change with w for vanadium

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Fig. 6. Images obtained by spherical crystal based on fluorescence imaging for different elements. (a) V; (b) Fe; (c) Zn

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Table 1. Performance of fluorescence imaging system for K_α of V-Zn

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Table 1. Performance of fluorescence imaging system for K_α of V-Zn

Element	V	Cr	Mn	Fe	Co	Ni	Cu	Zn
${E_{0}}_{}$ /eV	4953	5414	5900	6405	6931	7480	8046	8637
${θ_{0}}_{}$ /(°)	65.6	56.4	49.8	44.8	40.6	37.1	34.1	31.5
${θ_{RC}}_{}$ /μrad	54	73	98	131	172	220	276	343
${η_{int}}_{}$ /μrad	62	80	96	107	116	124	131	135
w /μm	1000	400	200	100	50	10	10	10
σ_m(θ_RC) /μm	17.8	26.3	38.5	55.8	79.3	109.5	147.8	197.1
σ_m(w) /μm	2413	1153	685	404	236	55	63.7	73.4
L /mm	7.2	7.8	7.8	7.4	7.2	6.5	7.8	9.3
ΔE /eV	16.5	11.5	8.7	6.1	4.1	1.1	1.4	1.8
ξ /10^-7	14	8	5.5	3.9	2.9	1.1	0.77	0.52

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Bozhong Tan, Qingguo Yang, Liangliang Du, Ran An, Dongbing Liu, Limin Meng. Spherical Crystal Based on X-Ray Fluorescence Imaging with High Spectral Resolution and Full Field of View[J]. Acta Optica Sinica, 2019, 39(11): 1134001

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