Reactivity and photochemistry of halide anions: atmospheric implications. Bromine and iodine are suspected to be responsible for most of the halogen-induced ozone loss in the stratosphere but are not currently included in atmospheric models due to a paucity of knowledge of the gas-phase chemistry and photochemistry of their anions and radicals. This project will develop and deploy advanced mass spectrometry and laser spectroscopy techniques to enable precision measurements of the reactions and p ....Reactivity and photochemistry of halide anions: atmospheric implications. Bromine and iodine are suspected to be responsible for most of the halogen-induced ozone loss in the stratosphere but are not currently included in atmospheric models due to a paucity of knowledge of the gas-phase chemistry and photochemistry of their anions and radicals. This project will develop and deploy advanced mass spectrometry and laser spectroscopy techniques to enable precision measurements of the reactions and photo-reactions of gas-phase iodide and bromide anions and their oxides. These state-of-the-art measurements of reaction kinetics and products will enable accurate chemical models that predict the impact of bromine and iodine chemistry on ozone levels and will inform future models for global climate.Read moreRead less
Promoting new reaction pathways with nonequilibrium flow. This project aims to develop a fundamental molecular level understanding of flow-induced physical and chemical reactions in liquids. Nonequilibrium molecular dynamics simulations will be used to gain insight into the mechanisms that promote reactions under shear, and how these are related to molecular structure and fluid composition. New relationships for determination of rate constants of reactions in nonequilibrium systems will also be ....Promoting new reaction pathways with nonequilibrium flow. This project aims to develop a fundamental molecular level understanding of flow-induced physical and chemical reactions in liquids. Nonequilibrium molecular dynamics simulations will be used to gain insight into the mechanisms that promote reactions under shear, and how these are related to molecular structure and fluid composition. New relationships for determination of rate constants of reactions in nonequilibrium systems will also be developed and tested. It is expected that this knowledge will enhance the capacity to control and promote reactions. This is significant for advancement of many technologies, from development of new synthetic pathways and products, to design of lubricants that can withstand extreme strain rates.Read moreRead less