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Surface ions generated by electron stimulated desorption from mass spectrometer ion source grids are frequently observed, but often misidentified. For example, in the case of mass 19, the source is often assumed to be surface fluorine, but since the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8eb873834ef5c3904a9177f542a39b5c
https://doi.org/10.1016/j.apsusc.2006.07.093

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Mass spectral resolution of F+ and H3O+ in very high vacuum

Autor: C. R. Cole, D. H. Baker, B. C. Holloway, Ronald A. Outlaw, R. L. Champion

Publikováno v: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 21:1796-1799

This brief report presents mass spectral resolution of H3O+ and F+ at mass 19 in a high vacuum system. Typically, this mass spectral peak observed in residual gas analyzers has always been attributed to fluorine. Using Fourier transform mass spectrom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::059165fc8a2c271112155966f8004beb
https://doi.org/10.1116/1.1590965

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Non-Gaussian Particle Tracking: Application to scaling of transport processes in heterogeneous porous media

Autor: Timothy D. Scheibe, C. R. Cole

Publikováno v: Water Resources Research. 30:2027-2039

Observation of scale-dependent dispersion and non-Gaussian concentration distributions under field-scale transport in heterogeneous media motivates investigation of alternatives to the classical Fickian diffusion model. A numerical model of non-Gauss

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b3ec06ebd2f50317fe7342215554836
https://doi.org/10.1029/94wr00587

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