The spatial atomic density distribution in a gas jet can be controlled by nozzle geometry. In the present work, argon gas jets from conical, slit, and cylindrical nozzles with the same inlet nozzle sizes are simulated using commercial fluid software (ANSYS Fluent). The results obtained indicate that the cylindrical nozzle produces a radial distribution with the profile similar to a Gaussian function, while the conical nozzle can produce a uniform radial distribution. For the slit nozzle, the profile along the slit width is similar to that for the cylindrical nozzle, and the profile along the slit length is similar to that for the conical nozzle. Along the gas jet, the density at the center of the gas jet experiences a rapid decrease with increasing distance x from the nozzle inlet. For the cylindrical nozzle, the decrease rate is the highest, and it varies as x–8.3 at a backing gas pressure of 80 bar. After the gas jet flows at about 15 mm from the nozzle outlet, the corresponding maximum densities for all nozzles tend to become approximately equal. Some results are compared with the available experimental data, and it is found that they are in agreement with each other.
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Zuo, Z., Yang, Y., Xiong, Z. et al. Characterization of the Spatial Atomic Density Distribution in Gas Jets from Three Different Nozzles. Russ Phys J 67, 47–54 (2024). https://doi.org/10.1007/s11182-024-03087-3
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DOI: https://doi.org/10.1007/s11182-024-03087-3