Photomultiplier nonlinear response in time-domain laser-induced luminescence spectroscopy

Química Nova

Leandro José Bossy Schip¹  Bruno Phelippe Buzelatto¹  Fábio Roberto Batista¹  Carlos Jorge Da Cunha¹  Lauro Camargo Dias Jr.¹  João Batista Marques Novo¹ 

[1] ,Universidade Federal do Paraná Departamento de Química Curitiba PR ,Brasil

关键词: photomultiplier;    time-resolved;    laser-induced luminescence;   

DOI  :  10.1590/S0100-40422007000100034

来源: SciELO

【 摘 要 】

A new procedure to 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 response function with different signal input terminations, and the relationship between the luminescence intensity reaching the photomultiplier and the measured decay time are described. These investigations establish that setting the maximum intensity of the luminescence signal below 0.3V guarantees, for signal input terminations equal or higher than 99.7 ohm, a linear photomultiplier response.

【 授权许可】

CC BY-NC   
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