A plastic miniature x-ray emission spectrometer based on the cylindrical von Hamos geometry

作者：Mattern B A^*; Seidler G T; Haave M; Pacold J I; Gordon R A; Planillo J; Quintana J; Rusthoven B

来源：Review of Scientific Instruments, 2012, 83(2): 023901.

DOI：10.1063/1.3680598

We present a short working distance miniature x-ray emission spectrometer (miniXES) based on the cylindrical von Hamos geometry. We describe the general design principles for the spectrometer and detail a specific implementation that covers K beta and valence level emission from Fe. Large spatial and angular access to the sample region provides compatibility with environmental chambers, microprobe, and pump/probe measurements. The primary spectrometer structure and optic is plastic, printed using a 3-dimensional rapid-prototype machine. The spectrometer is inexpensive to construct and is portable; it can be quickly set up at any focused beamline with a tunable narrow bandwidth monochromator. The sample clearance is over 27 mm, providing compatibility with a variety of environment chambers. An overview is also given of the calibration and data processing procedures, which are implemented by a multiplatform user-friendly software package. Finally, representative measurements are presented. Background levels are below the level of the K beta(2,5) valence emission, the weakest diagram line in the system, and photometric analysis of count rates finds that the instrument is performing at the theoretical limit.

• 出版日期2012-2