Ambient and modified atmospheric ion chemistry: From top to bottom

NS Shuman, DE Hunton, AA Viggiano - Chemical reviews, 2015 - ACS Publications
1.1. Historical Overview and Goals The knowledge that charged particles exist in the
atmosphere dates to the 1700s with Ben Franklin's discovery that the electrical properties of …

Old School Techniques with Modern Capabilities: Kinetics Determination of Dynamical Information Such as Barriers, Multiple Entrance Channel Complexes, Product …

SG Ard, AA Viggiano, NS Shuman - The Journal of Physical …, 2021 - ACS Publications
We show how the powerful combination of temperature-dependent kinetics coupled with
detailed statistical modeling can be used to derive dynamical information about transition …

Measurements of the Reaction Rate Coefficients of Atomic Hydrogen with Astrochemical Anions: CN− and C3N−

C Lochmann, SP Melath, R Wild… - The Astrophysical …, 2024 - iopscience.iop.org
We present the temperature-dependent reaction rate coefficients of CN− and C 3 N− with
atomic hydrogen in the temperature range from 7 to 290 K, measured in a 16-pole radio …

Cyclotrimerization of Acetylene under Thermal Conditions: Gas-Phase Kinetics of V+ and Fe+ + C2H2

DC McDonald, BC Sweeny, AA Viggiano… - The Journal of …, 2021 - ACS Publications
The kinetics of successive reactions of acetylene (C2H2) initiated on either vanadium or iron
atomic cations have been investigated under thermal conditions using the variable-ion …

Reaction of Mass-Selected, Thermalized VnOm+ Clusters with CCl4

BC Sweeny, SG Ard, AA Viggiano… - The Journal of Physical …, 2019 - ACS Publications
The kinetics of V n O m++ CCl4 (n, m= 2, 5; 3, 6–8; 4, 9–11; 5, 12–13) have been measured
under thermal conditions using a selected-ion flow tube equipped with a laser vaporization …

Elementary Reactions Leading to Perfluoroalkyl Substance Degradation in an Ar+/e Plasma

JP Wiens, TM Miller, SG Ard, AA Viggiano… - The Journal of …, 2022 - ACS Publications
The reactivities of three perfluoroalkyl carboxylic acids (PFCAs)(perfluoropropanoic acid
(C2F5COOH, PFPA), perfluorobutanoic acid (C3F7COOH, PFBA), and perfluorooctanoic …

Photochemical determination of O densities in the Martian thermosphere: Effect of a revised rate coefficient

JL Fox, AS Johnson, SG Ard… - Geophysical …, 2017 - Wiley Online Library
We investigate the production and loss rates of in the photochemical equilibrium region of
the Martian ionosphere near the subsolar point. We adopt neutral and ion densities …

Excited-State N Atoms Transform Aromatic Hydrocarbons into N-Heterocycles in Low-Temperature Plasmas

AI Begley, NS Shuman, BA Long, R Kampf… - The Journal of …, 2022 - ACS Publications
The direct formation of N-heterocycles from aromatic hydrocarbons has been observed in
nitrogen-based low-temperature plasmas; the mechanism of this unusual nitrogen-fixation …

[HTML][HTML] Kinetics of CO+ and CO2+ with N and O atoms

JE Tenewitz, T Lê, O Martinez, SG Ard… - The Journal of …, 2018 - pubs.aip.org
We have measured reaction rate constants for CO+ and CO 2+ reacting with N and O atoms
using a selected ion flow tube apparatus equipped with a microwave discharge atom …

Spin-inversion and spin-selection in the reactions FeO++ H 2 and Fe++ N 2 O

SG Ard, RS Johnson, JJ Melko, O Martinez… - Physical Chemistry …, 2015 - pubs.rsc.org
The reactions of FeO+ with H2 and of Fe+ with N2O were studied with respect to the
production and reactivity of electronically excited 4Fe+ cations. The reaction of electronic …