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Abstract

The undesirable resistance-capacitance (RC) distortion coming from the exponential moving averaging process of a boxcar integrator/averager acquisition system in kinetic and spectral luminescence measurements could be effectively eliminated by interfacing it to a microcomputer. Accurate acquisition of luminescence decay curves and time-resolved spectra was provided by a developed software that allows synchronous scan control of the gate delay time in the boxcar integrator with the emission wavelength in the monochromator. Some simple mathematical calculation routines, including excited-state lifetime extraction from luminescence decay curves and normalization of time-resolved spectra, were added. The main characteristics of both the software and the interfacing hardware are reported.

Keywords

Luminescence Time-resolved spectroscopy Luminescence instrumentation Luminescence decay curves Luminescence lifetime measurement Boxcar integrator Computer application Data acquisition software

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References

Novo

J. B. M.

Pessine

F. B. T.

, Appl. Spectrosc. 46, 852 (1992).

Stanford Research Systems, private communications.

Operation and Maintenance Instructions: 500M Spectrometer and MSD-2 Controller (SPEX Industries, Edison, New Jersey, 1990).

Pasquini

Poppi

R. J.

, Lab. Microcomputer 11, 70 (1992).

Operation and Service Manual: Model SR250, Gated Integrator and Boxcar Averager (Stanford Research Systems, Sunnyvale, California, 1987).

Eggebrecht

L. C.

, Interfacing to the IBM Personal Computer (Howard W. Sams and Company, Indianapolis, 1990), 2nd ed., p. 229.

Naiman

Rosenfeld

Zirkel

, Understanding Statistics (McGraw-Hill, New York, 1977), 2nd ed., Chap. 14.

Ehrenberg

A. S. C.

, Data Reduction (John Wiley & Sons, New York, 1975), p. 234.

Harnett

D. L.

, Introduction to Statistical Methods (Addison-Wesley Publishing Company, Reading, Massachusetts, 1971), Chap. 9.

10.

Demidovitch

Maron

, Elements de Calcul Numerique (Mir, Moscow, 1987), 2nd ed., p. 25.

11.

Nelder

J. A.

Mead

, Computer J. 7, 308 (1965).

12.

Demas

J. N.

, Excited State Lifetime Measurements (Academic Press, New York, 1983), Chaps. 5 and 7.

13.

Hieftje

G. M.

, Anal. Chem. 44, 81A; ibid., 44, 69A (1972).

14.

Demas

J. N.

Crosby

G. A.

, Anal. Chem. 42, 1010 (1970).

15.

Powell

R. C.

, “Modern Techniques in Optical Spectroscopy,” in Luminescence of Inorganic Solids, Di Bartolo

Ed. (Plenum Press, New York, 1978) p. 547.

Time-Resolved Luminescence Spectroscopy: Computer Interfacing and Software Development for a Boxcar-Based Laser-Luminescence Spectrometer

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