Parameter precision in global analysis of time-resolved spectra

Author

Van Stokkum, Ivo H M

Author_Institution

Dept. of Phys. & Astron., Vrije Univ., Amsterdam, Netherlands

Volume

46

Issue

4

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

764

Lastpage

768

Abstract

By means of simulation parameter estimation in global analysis of time resolved spectra was studied. Kinetic, spectral as well as spectrotemporal models were used to describe a system consisting of an inherent mixture of components whose concentrations change with time. With a single component the parameter precision did not differ between the different model types. With two or more components the precision decreases with a kinetic or spectral model because of overlap between concentration profiles or spectra of the components. However, with a spectrotemporal model the decrease is much less, and equals zero with zero spectral overlap

Keywords

curve fitting; jitter; parameter estimation; spectral analysis; spectrochemical analysis; spectroscopy computing; time resolved spectra; time resolved spectroscopy; concentration profiles; curve fitting; global analysis; kinetic model; least squares model; parameter precision; simulation parameter estimation; spectral model; spectrotemporal model; spectrotemporal models; time resolved spectra; time-resolved spectra; zero spectral overlap; Analytical models; Curve fitting; Helium; Kinetic theory; Parameter estimation; Parametric statistics; Photochemistry; Spectroscopy; Stochastic processes; System identification;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.650769

Filename

650769