Quimica nova | |
Photomultiplier nonlinear response in time-domain laser-induced luminescence spectroscopy | |
Schip, Leandro José Bossy1  Buzelatto, Bruno Phelippe1  Dias Jr., Lauro Camargo1  Batista, Fábio Roberto1  Novo, João Batista Marques1  Cunha, Carlos Jorge da1  | |
[1] Universidade Federal do Paraná, Curitiba, Brasil | |
关键词: photomultiplier; time-resolved; laser-induced luminescence.; | |
DOI : 10.1590/S0100-40422007000100034 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
A new procedureto find the limiting range of the photomultiplier linear response of a low-cost,digital oscilloscope-based time-resolved laser-induced luminescence spectrometer(TRLS), is presented. A systematic investigation on the instrument responsefunction with different signal input terminations, and the relationship betweenthe luminescence intensity reaching the photomultiplier and the measured decaytime are described. These investigations establish that setting the maximumintensity of the luminescence signal below 0.3V guarantees, for signal inputterminations equal or higher than 99.7 ohm, a linear photomultiplier response.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902019294282ZK.pdf | 459KB | download |