X-RAY FOCUSING USING MICROCHANNEL PLATES

被引：44

作者：

KAARET, P ^{[1
]}

GEISSBUHLER, P ^{[1
]}

CHEN, A ^{[1
]}

GLAVINAS, E ^{[1
]}

机构：

[1] COLUMBIA UNIV,DEPT PHYS,NEW YORK,NY 10027

来源：

APPLIED OPTICS | 1992年 / 31卷 / 34期

关键词：

X-RAY OPTICS; MICROCHANNEL PLATES; SURFACE ROUGHNESS; LOBSTER EYE OPTICS;

D O I：

10.1364/AO.31.007339

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present measurements of the x-ray focusing properties of square-pore microchannel plates (MCP's). Square-pore MCP's contain large numbers of closely packed optical surfaces, as required for grazing incidence x-ray optics. The surface of individual MCP channels has been measured and found to have high microroughness transverse to the channel axis and low microroughness parallel to the axis. The high frequency transverse roughness, on length scales greater than 400 nm, has a rms value of 5.9 nm and a Gaussian autocorrelation function with correlation length of 1.41 mum. We find that the geometric misalignments of the surfaces of different channels limit the angular resolution obtainable with current samples of MCP's to 7.1 arcmin.

引用

页码：7339 / 7343

页数：5