Multiple-zone emission spectra collection

Details Multiple-zone emission spectra collection Multiple-zone emission spectra collection

1998-02-27

1999-09-21

Kim, Robert H.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356244, 356346, 356417, 356311, G01J 330

Patent

active

059561386

ABSTRACT:
The collection of spectral information is enhanced through the formation of multiple zones of excitation and emission. In one embodiment, a plurality of the zones are located within a sample substance, thereby increasing the efficiency of sample spectrum collection. In another embodiment, a reference substance is positioned so as to enclose at least one of the excitation/collection zones. The reference substance adds a known spectrum to the collection path, enabling analytical instrumentation to compare the sample and reference spectra for calibration purposes. In a further embodiment, one of the zones may be positioned within a sealed volume, and compositional changes in the sealed volume may be detected and used for leak-detection purposes.

REFERENCES:
patent: 5469255 (1995-11-01), Kamada et al.
patent: 5777729 (1998-07-01), Aiyor et al.
J. White, N. Alpert, A. DeBell; "Photoelectric Raman Spectrometer," Journal of the Optical Society of America, vol. 45, No. 3, Mar. 1955, pp. 154-166.

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