# Dual-comb spectroscopy for high-temperature reaction kinetics

Source: [Dual-comb spectroscopy for high-temperature reaction kinetics](<https://www.sota2.com/research/paper/68fa3bed1e209131ce8d681b>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T00:51:50.098Z

Authors: Nicolas H. Pinkowski, Yiming Ding, Christopher L. Strand, Ronald K. Hanson, Raphael Horvath, Markus Geiser

Published: 2019-03-04T19:07:13.000Z

## Abstract

In the current study, a quantum-cascade-laser-based dual-comb spectrometer (DCS) was used to paint a detailed picture of a 1.0 ms high-temperature reaction between propyne and oxygen. The DCS interfaced with a shock tube to provide pre-ignition conditions of 1225 K, 2.8 atm, and 2% p-C3H4/18% O2/Ar. The spectrometer consisted of two free-running, non-stabilized frequency combs each emitting at 179 wavelengths between 1174 and 1233 cm-1. A free spectral range, f\_r, of 9.86 GHz and a difference in comb spacing, {\\Delta}f\_r, of 5 MHz, enabled a theoretical time resolution of 0.2 us but the data was time-integrated to 4 us to improve SNR. The accuracy of the spectrometer was monitored using a suite of independent laser diagnostics and good agreement observed.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1903.07578>)

[PDF](<https://arxiv.org/pdf/1903.07578.pdf>)