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- Title
Mathematical-Physics Analyses of the Nozzle Shaping at the Aperture Gas Outlet into Free Space under ESEM Pressure Conditions.
- Authors
Šabacká, Pavla; Maxa, Jiří; Švecová, Jana; Talár, Jaroslav; Binar, Tomáš; Bayer, Robert; Bača, Petr; Dostalová, Petra; Švarc, Jiří
- Abstract
The paper presents a methodology that combines experimental measurements and mathematical-physics analyses to investigate the flow behavior in a nozzle-equipped aperture associated with the solution of its impact on electron beam dispersion in an environmental scanning electron microscope (ESEM). The shape of the nozzle significantly influences the character of the supersonic flow beyond the aperture, especially the shape and type of shock waves, which are highly dense compared to the surrounding gas. These significantly affect the electron scattering, which influences the resulting image. This paper analyzes the effect of aperture and nozzle shaping under specific low-pressure conditions and its impact on the electron dispersion of the primary electron beam.
- Subjects
SUPERSONIC flow; SCANNING electron microscopes; SPRAY nozzles; SHOCK waves; ELECTRON beams; ELECTRON scattering; NOZZLES
- Publication
Sensors (14248220), 2024, Vol 24, Issue 11, p3436
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s24113436