Lawrence Livermore National Security, LLC

Picarro, Inc.

Ted Ognibene

Graham Bench

Kenneth W Turteltaub

Chris W Rella

Sze Meng Tan

Eric R Crosson

John Allen Hoffnagle

John S Vogel

Paul F Daley

Graham F Peaslee

Gary A Salazar Quintero

Alan Daniel McCartt

Nabil Saad

Avi Thomas

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.

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

An interface for the analysis of liquid sample having carbon content by an accelerator mass spectrometer including a wire, defects on the wire, a system for moving the wire, a droplet maker for producing droplets of the liquid sample and placing the droplets of the liquid sample on the wire in the defects, a system that converts the carbon content of the droplets of the liquid sample to carbon dioxide gas in a helium stream, and a gas-accepting ion source connected to the accelerator mass spectrometer that receives the carbon dioxide gas of the sample in a helium stream and introduces the carbon dioxide gas of the sample into the accelerator mass spectrometer.

Interface for the rapid analysis of liquid samples by accelerator mass spectrometry

A system for quantitatively reducing oxide gases. A pre-selected amount of zinc is provided in a vial. A tube is provided in the vial. The zinc and the tube are separated. A pre-selected amount of a catalyst is provided in the tube. Oxide gases are injected into the vial. The vial, tube, zinc, catalyst, and the oxide gases are cryogenically cooled. At least a portion of the vial, tube, zinc, catalyst, and oxide gases are heated.

System for trapping and storing gases for subsequent chemical reduction to solids

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Oakland, CA, United States of America

Ted Ognibene