The idea of using the core of a jet of expanding gas to form a molecular beam has led to the construction of complex gasdynamic facilities and has prescribed a number of specific requirements for the creation of high-intensity molecular beams. Two basic requirements are high pumping speed and a skimmer, the first element in the beam-generating system, which does not react appreciably on the jet. The present article gives the results of an experimental investigation of conditions for creating a molecular beam from a jet of carbon dioxide downstream of a sonic nozzle. The position of maximum intensity with room temperature gas in the source is given by the group of variables (P0 d*)0.4. Kn∞. By measuring the intensity and by mass-spectrometric analysis of a molecular beam for specific conditions we have established the CO2 pressure in the stagnation chamber at which condensation begins. The investigations were carried out in a molecular-beam generator with cryogenic pumping.
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Vostrikov, A.A., Kusner, Y.S., Rebrov, A.K. et al. Generation of an intense molecular beam of CO2 by a gasdynamic method. J Appl Mech Tech Phys 16, 180–186 (1975). https://doi.org/10.1007/BF00858911
- Mathematical Modeling
- Carbon Dioxide
- Mechanical Engineer
- Experimental Investigation