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Books > Science & Mathematics > Chemistry > Physical chemistry
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Uniform Supersonic Flows In Chemical Physics: Chemistry Close To Absolute Zero Studied Using The Cresu Method (Hardcover)
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Uniform Supersonic Flows In Chemical Physics: Chemistry Close To Absolute Zero Studied Using The Cresu Method (Hardcover)
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Radioastronomy has painted an extraordinary picture of the Galactic
interstellar medium, which displays an amazing organization and
structuring of matter from very hot ultra-diluted media to very
cold denser milieus considered as the cradles of stars. In these
latter environments, the discovery of a chemical diversity of
molecules, including those associated with precursors to life
itself, immediately brought to light the question of the mechanisms
leading to their formation and persistence at temperatures as low
as 10 K. The chemical networks developed to understand telescope
observations required a great deal of physical and chemical
parameters relevant to interstellar conditions, particularly at
very low temperatures. These included the rate coefficients of
thousands of gas phase chemical reactions. Such data were missing
in the 1970s, when the very first molecular discoveries were made.
Then, in the early eighties, it was realized that uniform
supersonic flows were ideal chemical reactors to study reaction
kinetics at interstellar temperatures.Uniform Supersonic Flows in
Chemical Physics reviews 40 years of use of such reactors, the
so-called CRESU machines, focusing on major breakthroughs brought
to chemical physics, physical chemistry, astrophysics and
astrochemistry by the various experiments carried out with such
apparatuses. The wealth of kinetic data at very low temperatures
provided new targets for the predictions of theory, with new
theoretical methods being developed to explain observed behavior.
The first two chapters describe the physical context of reaction
kinetics at very low temperatures and the requirements needed to
run optimally such uniform supersonic flows, together with a
historical perspective. Chapters 3 to 9 describe the various
families of chemical processes that have been explored within the
CRESU technique, highlighting major advances and offering an
exhaustive up-to-date bibliography. Chapters 10 and 11 show how
these experimental results have helped in improving the ideas in
quantum chemistry and interstellar modeling. The book concludes
with an overview of potential perspectives and new routes to be
explored.
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