Abstract

An investigation was made of the analytical capability of a Si(Li) x-ray detector for energy-dispersive techniques in the 1- to 10-keV photon energy range with multiple single channel analyzers using the electron microprobe beam as the excitation source at operating voltages of 10 to 20 kV. This system can provide rapid, accurate, simultaneous, quantitative elemental microanalysis of major constituents in complex solids for all elements heavier than Si where spectral interferences are absent and reference standards are used. Calculated theoretical detection limits are about 0.2 wt%. A relative precision of about 1 to 5% is routine for a 10- or 20-sec counting period for elements in concentrations above about 5 wt%. Data for K, L, and M x-ray spectra of representative elements ranging in energy from 1.25 to 8.64 keV are presented for operating voltages of 10, 15, and 20 kV and beam currents of 1 to 10 nA.

Properties of polycapillary optics dedicated to low-energy parallel-beam wavelength-dispersive spectrometers for synchrotron-based X-ray fluorescence study

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Opt. Express 29(17) 27193-27211 (2021)

Reflection zone plate wavelength-dispersive spectrometer for ultra-light elements measurements

Aljoša Hafner, Lars Anklamm, Anatoly Firsov, Alexander Firsov, Heike Löchel, Andrey Sokolov, Renat Gubzhokov, and Alexei Erko
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New parallel wavelength-dispersive spectrometer based on scanning electron microscope

Alexei Erko, Alexander Firsov, Renat Gubzhokov, Anjuar Bjeoumikhov, Andreas Günther, Norbert Langhoff, Mario Bretschneider, Yvonne Höhn, and Reiner Wedell
Opt. Express 22(14) 16897-16902 (2014)

Tailoring the performances of low operating voltage InAlAs/InGaAs avalanche photodetectors

Yingjie Ma, Yonggang Zhang, Yi Gu, Xingyou Chen, Suping Xi, Ben Du, and Hsby Li
Opt. Express 23(15) 19278-19287 (2015)

Femtosecond time-resolved X-ray absorption spectroscopy of liquid using a hard X-ray free electron laser in a dual-beam dispersive detection method

Yuki Obara, Tetsuo Katayama, Yoshihiro Ogi, Takayuki Suzuki, Naoya Kurahashi, Shutaro Karashima, Yuhei Chiba, Yusuke Isokawa, Tadashi Togashi, Yuichi Inubushi, Makina Yabashi, Toshinori Suzuki, and Kazuhiko Misawa
Opt. Express 22(1) 1105-1113 (2014)