Wave propagation and focusing of soft X-rays by spherical bent microchannel plates

被引:2
|
作者
Mazuritskiy, M., I [1 ]
Lerer, A. M. [1 ]
Marcelli, A. [2 ,3 ,4 ]
Dabagov, S. B. [2 ,5 ,6 ]
Coreno, M. [4 ]
D'Elia, A. [7 ]
Rezvani, S. J. [2 ,7 ]
机构
[1] Southern Fed Univ, Phys Dept, Rostov Na Donu 344090, Russia
[2] Ist Nazl Fis Nucl, Lab Nazl Frascati, Via Enrico Fermi 54, I-00044 Frascati, Italy
[3] RICMASS Rome Int Ctr Mat Sci Superstripes, I-00185 Rome, Italy
[4] CNR, Ist Struttura Mat, Via Fosso Cavaliere 100, I-00133 Rome, Italy
[5] RAS, PN Lebedev Phys Inst, Moscow 119991, Russia
[6] NR Nucl Univ MEPhI, Moscow 115409, Russia
[7] CNR, IOM, Lab Nazl TASC, Basovizza SS 14,Km 163-5, I-34012 Trieste, Italy
基金
欧盟地平线“2020”;
关键词
X-ray focusing; Microchannel plate; X-ray waveguides; X-ray optics; MULTIPLE REFLECTION; INTERFERENCE; RADIATION; MICROCAPILLARY; FLUORESCENCE; SUPPRESSION; EXCITATION; SCATTERING;
D O I
10.1107/S1600577520016458
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Synchrotron radiation sources have been used to study the focusing properties and angular distribution of X-ray radiation at the exit of spherically bent microchannel plates (MCPs). In this contribution it is shown how soft X-ray radiation at energies up to 1.5 keV can be focused by spherically bent MCPs with curvature radii R of 30 mm and 50 mm. For these devices, a focus spot is detectable at a distance between the detector and the MCP of less than R/2, with a maximum focusing efficiency up to 23% of the flux illuminating the MCP. The soft X-ray radiation collected at the exit of microchannels of spherically bent MCPs are analyzed in the framework of a wave approximation. A theoretical model for the wave propagation of radiation through MCPs has been successfully introduced to explain the experimental results. Experimental data and simulations of propagating radiation represent a clear confirmation of the wave channeling phenomenon for the radiation in spherically bent MCPs.
引用
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页码:383 / 391
页数:9
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