Method for the substantial reduction of quenching effects in luminescence spectrometry

Demas, James N; Jones, Wesley M; Keller, Richard A

Title: Method for the substantial reduction of quenching effects in luminescence spectrometry

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Abstract

Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequenices. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may reduced to tis unquenched value.

Inventors:

Demas, James N ^[1]; Jones, Wesley M ^[2]; Keller, Richard A ^[2]

Charlottesville, VA
Los Alamos, NM

Issue Date:: 1989-01-01

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 867025

Patent Number(s):: 4845368

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

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G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G01T1/2045 - {Liquid scintillation quench systems}

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DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; substantial; reduction; quenching; effects; luminescence; spectrometry; reducing; analytical; measurements; embodiments; described; relate; form; time; resolution; based; amplitudes; phase; shifts; modulated; emission; signals; embodiment; measured; signal; substantially; independent; sample; sufficiently; frequenices; amplitude; shift; excitation; source; simultaneously; observed; reduced; tis; unquenched; value; time resolution; excitation source; phase shift; substantially independent; phase shifts; substantial reduction; quenching effects; simultaneously measure; /250/

Citation Formats


                    Demas, James N, Jones, Wesley M, and Keller, Richard A. Method for the substantial reduction of quenching effects in luminescence spectrometry.  United States: N. p., 1989. 
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                    Demas, James N, Jones, Wesley M, & Keller, Richard A. Method for the substantial reduction of quenching effects in luminescence spectrometry.  United States.

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                    Demas, James N, Jones, Wesley M, and Keller, Richard A. Sun .  
        "Method for the substantial reduction of quenching effects in luminescence spectrometry".  United States.  https://www.osti.gov/servlets/purl/867025.

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@article{osti_867025,

  title        = {Method for the substantial reduction of quenching effects in luminescence spectrometry},

  author       = {Demas, James N and Jones, Wesley M and Keller, Richard A},

  abstractNote = {Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequenices. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may reduced to tis unquenched value.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1989},

  month        = {1}

}

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Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequencies. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may be reduced to its unquenched value. 3 figs.
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