Atomic Fluorescence Dispersion Detection Technique Based on Area Array Single Photon Counting Imaging Detector
10.19756/j.issn.0253-3820.241109
- VernacularTitle:基于面阵单光子计数成像探测器的原子荧光色散检测技术
- Author:
Chen TAO
1
;
Hong-Ji ZHANG
;
Chun-Sheng LI
;
Ling-Ping HE
;
Zhen-Yu MA
;
Bo CHEN
;
Ran ZHANG
Author Information
1. 中国科学院长春光学精密机械与物理研究所,空间光学研究一部,长春 130033
- Keywords:
Atomic fluorescence spectroscopy;
Planar array single photon position sensitive anode imaging detector;
Dispersion detection;
Ultraviolet high sensitivity imaging detection technique
- From:
Chinese Journal of Analytical Chemistry
2025;53(2):187-194
- CountryChina
- Language:Chinese
-
Abstract:
The single photon counting imaging detector based on microchannel plate(MCP)has the characteristics of high sensitivity and low dark count rate,and has been applied to the optical remote sensing detection of weak ultraviolet spectral signals in space.In this work,by using planar array single photon counting imaging detector as the detector,flat-field concave grating as the splitter,and electrodeless discharge lamp(EDL)as the excitation light source,a dispersion detection system suitable for hydride generation-atomic fluorescence spectrometry(HG-AFS)was developed.The wavelength calibration of the system was carried out,and the negative high pressure and EDL stability time of the planar array single photon counting imaging detector were analyzed and optimized.The characteristic emission spectral lines of As and Bi elements excited in the wavelength range of 180-320 nm were analyzed,and the scattering interference in the wavelength range of 257.3-306.7 nm was discussed.The results showed that the AFS dispersion detection system based on the planar array single photon counting imaging detector could detect and analyze the HG-AFS fluorescence signal initially,and the influence of scattering interference on the detection results was effectively avoided.The system had the advantages including simple structure,no refrigeration and temperature control,no moving parts and simultaneous measurement of multi-band.
