A micro-XRF spectrometer based on a rotating anode generator and capillary optics

Abstract The analytical characteristics of a laboratory-scale micro-X-ray fluorescence spectrometer, based on a rotating anode X-ray generator and capillary optics, are described. Usually, a microbeam 15 μm in diameter, derived from a copper or molybdenum anode operated at 45 kV, is used for sample irradiation. Elemental yields around the 1 count s−1(μg cm−2)−1 level are obtained, corresponding to absolute detection limits for thin samples in the 0.05–1 pg range and to relative MDL levels of 3–10 ppm for thick organic samples. The use of the instrument for studying (trace) element migration in Roman glass and for the nondestructive analysis of decorations on Japanese 18th century porcelain vases is described.

[1]  A. Rindby,et al.  X-ray Capillary Microbeam Spectrometer , 1989 .

[2]  W. Eberhardt.  Applications of Synchrotron Radiation , 1995 .

[3]  A. Rindby,et al.  Improved capillary optics applied to microbeam x‐ray fluorescence: Resolution and sensitivity , 1995 .

[4]  Koen Janssens,et al.  Analysis of X‐ray spectra by iterative least squares (AXIL): New developments , 1994 .

[5]  Mitsuo Shoji,et al.  Intensity of x‐ray microbeam formed by a hollow glass pipe , 1991 .

[6]  A. Rindby,et al.  A 200 μm X-ray microbeam spectrometer , 1989 .

[7]  N. Yamamoto,et al.  Development of an Innovative 5 μmφ Focused X-Ray Beam Energy-Dispersive Spectrometer and its Applications : Materials and Device Structures with Atomic Scale Resolution( Solid State Devices and Materials 1) , 1988 .

[8]  P. Chevallier,et al.  Synchrotron radiation induced X-ray fluorescence at LURE , 1989 .

[9]  D. A. Carpenter,et al.  Fast, high-resolution x-ray microfluorescence imaging , 1990 .

[10]  M. Taylor,et al.  Applications of a laboratory x-ray microprobe to materials analysis , 1988 .

[11]  P. Potts,et al.  Modelling the transmission of X-rays through glass capillary waveguides: implications for the design of a laboratory X-ray microprobe , 1994 .

[12]  Per Engström,et al.  Microbeam technique for energy‐dispersive x‐ray fluorescence , 1989 .

[13]  Koen Janssens,et al.  Corrosion phenomena in electron, proton and synchrotron X-ray microprobe analysis of Roman glass from Qumran, Jordan , 1996 .

[14]  Anders Rindby,et al.  Applications of fiber technique in the X-ray region , 1986 .

[15]  A. Rindby,et al.  X-ray microbeam spectroscopy: a biological application , 1990 .

[16]  Pha Peter Mutsaers,et al.  Accurate evaluation of μ-PIXE and μ-XRF spectral data through iterative least squares fitting , 1996 .

[17]  M. Zaitz.  Small Area X-Ray Fluorescence Analysis of Multilayer Thin Metal Films , 1993 .

[18]  B. Hołyńska,et al.  Multifunctional system for energy dispersive x-ray fluorescence analysis , 1995 .

[19]  Koen Janssens,et al.  Detailed ray‐tracing code for capillary optics , 1995 .