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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 40, Iss. 5 — Jul. 1, 1986
  • pp: 599–605

Real-Time Acquisition and Preprocessing of Kinetic and Spectroscopic Data in Laser Flash Photolysis

A. Longoni and G. Ponterini

Applied Spectroscopy, Vol. 40, Issue 5, pp. 599-605 (1986)


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Abstract

An automatic flash photolysis system for the measurement of absorption decays and transient difference spectra is described. The apparatus performs a digital measurement of the light transmitted by the sample and a few on-line preprocessing operations on the measured data, such as the digital averaging of the signal and the computation of the change in absorbance. A boxcar averager, used as a gated integrator, constitutes the sampling head of the apparatus. A microprocessor-based acquisition and control unit performs a digital conversion of the value sampled by the boxcar, provides an on-line preprocessing of the data, and supervises every operation required by the measurement process. This unit is interfaced to a personal computer which allows a friendly interaction with the operator as well as the on-line display of the data. The electronic instrumentation features a time resolution of a few nanoseconds, with a boxcar averager as input head, and of a few hundreds of picoseconds, with a sampling oscilloscope as input head.

Citation
A. Longoni and G. Ponterini, "Real-Time Acquisition and Preprocessing of Kinetic and Spectroscopic Data in Laser Flash Photolysis," Appl. Spectrosc. 40, 599-605 (1986)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-40-5-599

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