High-Speed Multichannel MAES Analyzers Based on BLPP-2000 and BLPP-4000 Photodetector Arrays

Autor: V. A. Labusov, D. O. Selyunin, S. A. Babin
Rok vydání: 2020
Předmět:
Zdroj: Inorganic Materials. 56:1431-1435
ISSN: 1608-3172
0020-1685
DOI: 10.1134/s0020168520140022
Popis: The main directions in the development of the spectral systems for scintillation atomic emission analysis of powdered geological samples are aimed at increasing the sensitivity, spectral resolution, and speed of the spectrum analysis to reduce the detection limits. The goal of this study is development of high-speed multichannel emission spectrum analyzers with hybrid assemblies of arrays consisting of 14 photodetectors of two types, high-sensitivity BLPP-2000 array and high spatial resolution BLPP-4000 array, and theoretical estimation of the signal-to-noise ratio for scintillation and integral spectra recorded with the aforementioned photodetectors. The design of the high-speed MAES analyzers with BLPP-2000 and BLPP-4000 photodetector arrays provides parallel readout of arrays in hybrid assemblies. The Grand spectrometer equipped with such arrays consisting of 14 BLPP-2000 or BLPP-4000 photodetectors can record spectra in the 190–350 nm wavelength range. The minimum exposure time is 0.9 and 1.7 ms, respectively. It is shown that, when intensities of spectral lines are measured using the BLPP-2000 arrays, the signal-to-noise ratio is 3 times higher in integral analysis and 5 times higher in scintillation analysis as compared to measurements using the BLPP-4000 arrays.
Databáze: OpenAIRE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje