High intensity monocapillary X-ray guide tube with 10 micrometer spatial resolution for analytical X-ray microscope

Fundamental characteristics of hybrid X-ray focusing optics for micro X-ray fluorescence analysis

“…A MCXL shown in Fig. 8 was an X-ray guide tube designed and manufactured at HORIBA, Ltd. [7,8]. This MCXL was installed to our experimental setup shown in Fig.…”

“…Therefore, if low energy X-rays are introduced in the PCXL, they increase the size of the X-ray beam. On the other hand, a monocapillary can provide a small beam size, and smaller divergent angle of X-ray microbeam than the PCXL [7]. However, X-ray intensity obtained by the monocapillary is lower than that obtained by the PCXL because of low gain for monocapillary optics.…”

“…X-ray focusing optics, such as doubly curved crystal optics [4] and monocapillary [5][6][7][8] and polycapillary X-ray optics [9][10][11][12], has been applied for l-XRF analysis in the laboratory. Specification (spot size, beam intensity, angular divergence, etc.)…”

X-ray Energy Dependence of the Properties of the Focused Beams Produced by Polycapillary X-ray Lens

“…However, it is difficult to obtain an x-ray microbeam using a method of converging visible light such as an optical lens and optical mirror because the refractive index of an x-ray is close to unity. Developments in manufacturing x-ray focusing optics such as doubly curved crystal (DCC) optics [1][2][3] and monocapillary [4][5][6][7] and polycapillary x-ray optics [8][9][10] have enabled the analysis of small regions of a sample in XRF studies.…”

“…The fundamental characteristics of the polycapillary x-ray optics, such as flux density gain, transmission efficiency, and focal spot size, have been investigated in numerous reports. 6,[20][21][22][23][24] Our group also studied the fundamental characteristics of polycapillary x-ray optics in the laboratory. 24 The output focal distance (OFD), which is generally called the working distance, is one of important parameters of polycapillary x-ray optics.…”