Nucleation studies in supersonic flow
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Date
2022-06
Publication Type
Book Chapter
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Abstract
Supersonic flow offers a unique opportunity to follow the evolution of an aerosol on the microsecond timescale. The initial appearance of the droplets/particles and their further development can involve a number of nucleation steps: homogeneous nucleation from the supersaturated vapor to the (supercooled) liquid, nucleation of a solid phase from the supercooled liquid, and even heterogeneous nucleation of other species onto pre-existing particles. In this chapter, we present basic concepts from nucleation theory, the experimental techniques used to characterize the thermodynamic state of the flow as well as the size, state and composition of the aerosol, and the approaches used to determine nucleation rates. The nucleation experiments that have been conducted both within and at the exit of Laval nozzles are summarized, and the importance of experiments conducted in supersonic flows to advancing the field of nucleation is discussed.
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Publication status
published
Book title
Uniform Supersonic Flows in Chemical Physics: Chemistry Close to Absolute Zero Studied Using the CRESU Method
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Volume
Pages / Article No.
351 - 392
Publisher
World Scientific
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Subject
Nucleation; Supersonic flow; Phase transitions
Organisational unit
03961 - Signorell, Ruth / Signorell, Ruth
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Is part of: 10.1142/q0324