SYNCHROTRON X-RAY MICROPROBE AND ITS APPLICATION TO HUMAN HAIR ANALYSIS

被引：79

作者：

IIDA, A ^{[1
]}

NOMA, T ^{[1
]}

机构：

[1] CANON INC,CANON RES CTR,ATSUGI,KANAGAWA 24301,JAPAN

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1993年 / 82卷 / 01期

关键词：

D O I：

10.1016/0168-583X(93)95092-J

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A synchrotron X-ray microprobe system based on Kirkpatrick-Baez optics has been developed. Double-crystal and synthetic multilayer monochromators are used for high energy resolution experiments and for highly sensitive X-ray fluorescence analysis, respectively. The characteristics of the X-ray microprobe were experimentally examined. A beam size of around 5 mum was obtained; the X-ray photon flux at the storage ring current of 300 mA is of the order of 10(7-8) photons/s and 10(9-10) photons/s for the double-crystal and multilayer monochromators, respectively. The concentration distributions of trace elements in cross sections of human hair were measured using an X-ray microbeam with the multilayer monochromator. Inhomogeneous distributions of trace elements in thin cross-section samples show that two-dimensional imaging is effective and indispensable both for the determination of the elemental concentration in hair and for investigating the incorporation mechanism of trace elements into hair from the body.

引用

页码：129 / 138

页数：10

共 26 条

[1] ON THE INCORPORATION OF TRACE-ELEMENTS INTO HUMAN-HAIR MEASURED WITH MICRO-PIXE [J].