In pursuit of a chemical and phenomenological understanding of long-living atmospheric pressure water-based ball plasmoids

Plasma;Atmospheric Pressure;Mass Spectrometry;Water;Non-Equilibrium Plasma;Plasmoids;Plasmoid Generator;Humid Plasma

Friday, David ; McCall ; Benjamin J.

关键词: Plasma;    Atmospheric Pressure;    Mass Spectrometry;    Water;    Non-Equilibrium Plasma;    Plasmoids;    Plasmoid Generator;    Humid Plasma;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/49634/David_Friday.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

Atmospheric pressure water-based plasmoids have been studied for over a decade now,however a large amount of information regarding how the plasmoid is impacted by theparameters of the plasmoid generator and environment, and what chemical species are present inthe plasmoid has not been reported. To fill this gap, the geometry and the materials of theplasmoid generator were varied greatly in order to determine how the plasmoid changes inresponse to each of these parameters. Furthermore, the effect the atmosphere’s andenvironment’s parameters have on the rising plasmoid was studied in a controlled environment.Mass spectrometry of these plasmoids was also performed using an ion trap and an orbitrap inorder to identify the ions present in the plasmoid. These spectra revealed the presence of(H2O)nH+ (n=2, 3), (H2O)nNO+ (n=0, 1), and several small molecules including H2O, NH3, andNO3 bound to metal ions. Using isotopic labeling, these ions provided quantitative evidenceshowing the plasmoid’s unique ability to protect its contents from mixing with the ambient air.