Direct Frequency Comb Measurement of OD + CO -> DOCO Kinetics
arXiv:1608.07321 · doi:10.1126/science.aag1862
Abstract
The kinetics of the OH + CO reaction, fundamental to both atmospheric and combustion chemistry, are complex due to the formation of the HOCO intermediate. Despite extensive studies on this reaction, HOCO has not been observed at thermal reaction conditions. Exploiting the sensitive, broadband, and high-resolution capabilities of time-resolved cavity-enhanced direct frequency comb spectroscopy, we observe OD + CO reaction kinetics with the detection of stabilized trans-DOCO, the deuterated analogue of trans-HOCO, and its yield. By simultaneously measuring the time-dependent concentrations of both trans-DOCO and OD species, we observe unambiguous low-pressure termolecular dependence on the reaction rate coefficients for both N2 and CO bath gases. These results confirm the HOCO formation mechanism and quantify its yield.
39 pages, 14 figures
References in corpus (1)
Cited by in corpus (19)
- Frequency comb spectroscopy
- Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
- Quantum sensing with atomic, molecular, and optical platforms for fundamental physics
- Quantum state manipulation and cooling of ultracold molecules
- Bimolecular chemistry in the ultracold regime
- Nanosecond time-resolved dual-comb absorption spectroscopy
- Tutorial: Nonlinear magnonics
- Mid-infrared supermirrors with finesse exceeding 400 000
- Substrate-transferred GaAs/AlGaAs crystalline coatings for gravitational-wave detectors: A review of the state of the art
- Simultaneous Measurement of Mid-Infrared Refractive Indices in Thin-Film Heterostructures: Methodology and Results for GaAs/AlGaAs
- Trap-assisted complexes in cold atom-ion collisions
- Repetition rate stabilization of an optical frequency comb based on solid-state laser technology with an intra-cavity electro-optic modulator
- All-Optical Noise Quenching of An Integrated Frequency Comb
- Broadband Cavity-Enhanced Kerr Comb Spectroscopy on Chip
- Design and Implementation of a New Apparatus for Astrochemistry: Kinetic Measurements of the CH + OCS Reaction and Frequency Comb Spectroscopy in a Cold Uniform Supersonic Flow
- On-Chip Parametric Synchronization of a Dissipative Kerr Soliton Microcomb
- An air-spaced virtually imaged phased array with 94 MHz resolution for precision spectroscopy
- A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures
- Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm