skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption

Abstract

Optical spectrometer apparatus, systems, and methods for analysis of carbon-14 including a resonant optical cavity configured to accept a sample gas including carbon-14, an optical source configured to deliver optical radiation to the resonant optical cavity, an optical detector configured to detect optical radiation emitted from the resonant cavity and to provide a detector signal; and a processor configured to compute a carbon-14 concentration from the detector signal, wherein computing the carbon-14 concentration from the detector signal includes fitting a spectroscopic model to a measured spectrogram, wherein the spectroscopic model accounts for contributions from one or more interfering species that spectroscopically interfere with carbon-14.

Inventors:
; ; ; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1356288
Patent Number(s):
9645077
Application Number:
14/714,658
Assignee:
Lawrence Livermore National Security, LLC
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 May 18
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ognibene, Ted, Bench, Graham, McCartt, Alan Daniel, Turteltaub, Kenneth, Rella, Chris W., Tan, Sze, Hoffnagle, John A., and Crosson, Eric. Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption. United States: N. p., 2017. Web.
Ognibene, Ted, Bench, Graham, McCartt, Alan Daniel, Turteltaub, Kenneth, Rella, Chris W., Tan, Sze, Hoffnagle, John A., & Crosson, Eric. Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption. United States.
Ognibene, Ted, Bench, Graham, McCartt, Alan Daniel, Turteltaub, Kenneth, Rella, Chris W., Tan, Sze, Hoffnagle, John A., and Crosson, Eric. Tue . "Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption". United States. https://www.osti.gov/servlets/purl/1356288.
@article{osti_1356288,
title = {Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption},
author = {Ognibene, Ted and Bench, Graham and McCartt, Alan Daniel and Turteltaub, Kenneth and Rella, Chris W. and Tan, Sze and Hoffnagle, John A. and Crosson, Eric},
abstractNote = {Optical spectrometer apparatus, systems, and methods for analysis of carbon-14 including a resonant optical cavity configured to accept a sample gas including carbon-14, an optical source configured to deliver optical radiation to the resonant optical cavity, an optical detector configured to detect optical radiation emitted from the resonant cavity and to provide a detector signal; and a processor configured to compute a carbon-14 concentration from the detector signal, wherein computing the carbon-14 concentration from the detector signal includes fitting a spectroscopic model to a measured spectrogram, wherein the spectroscopic model accounts for contributions from one or more interfering species that spectroscopically interfere with carbon-14.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {5}
}

Patent:

Save / Share:

Works referenced in this record:

Molecular Gas Sensing Below Parts Per Trillion: Radiocarbon-Dioxide Optical Detection
journal, December 2011


Saturated-Absorption Cavity Ring-Down Spectroscopy
journal, March 2010


Radiocarbon dating by infrared laser spectroscopy: A reasibility study
journal, April 1981


A new accelerator mass spectrometry system for 14C-quantification of biochemical samples
journal, July 2002


The HITRAN2012 molecular spectroscopic database
journal, November 2013


A low-volume cavity ring-down spectrometer for sample-limited applications
journal, May 2014


Cavity ring‐down spectroscopy for quantitative absorption measurements
journal, February 1995