A correlator for light scattering experiments

Author

Danese, Giovanni ; Leporati, Francesco ; Lombardi, Remo ; Roveda, Marco

Author_Institution

Dipt. di Inf. e Sistemistica, Pavia Univ., Italy

Volume

47

Issue

4

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

935

Lastpage

940

Abstract

Light scattering is frequently used to examine the random motion of physical system particles. By evaluating the autocorrelation function of the acquired signal, structural information of macromolecular solutions can be obtained. Here we present an instrument that is able of calculating the correlation function in real time. The instrument features high-precision capabilities and a wide range of selectable delays. A digital signal processor (DSP) is charged with the calculations, whereas a PC permits the user the management of the global instrument and the visualization and the storing of the evaluated correlation

Keywords

computerised instrumentation; correlators; delays; light scattering; microcomputer applications; real-time systems; DSP; autocorrelation function; correlator; digital signal processor; light scattering experiments; macromolecular solutions; physical system particles; random motion; real time calculation; selectable delays; structural information; Autocorrelation; Correlators; Delay; Digital signal processing; Digital signal processors; Instruments; Light scattering; Particle scattering; Photomultipliers; Physics;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.744646

Filename

744646