La/B <sub>4</sub> C small period multilayer interferential mirror for the analysis of boron

Jean‐Marc André, Philippe Jonnard, C. Michaelsen, J. Wiesmann, F. Bridou, M. F. Ravet, Franck Delmotte

X-Ray Spectrometry · 2005 · 35 citations · 7 references

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Abstract

Abstract An La/B 4 C multilayer interferential mirror with small period d (4.8 nm) was produced by diode sputtering for the detection of the boron K emission by wavelength‐dispersive x‐ray spectrometry at a large Bragg angle (close to 45°). The structure of the mirror was characterized by grazing incidence x‐ray reflectometry and its performance at the energy of the boron K emission (183 eV) was evaluated by means of polarized synchrotron radiation. Spectrometric measurements showed that the La/B 4 C mirror improved the detection limit of boron using by a factor of 2 with respect to similar Mo/B 4 C mirrors and by a factor of 4 with respect to a lead stearate crystal. Copyright © 2005 John Wiley &amp; Sons, Ltd.

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