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Measurement of the mobility distribution of tropospheric ions

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Summary

The analysis is given for an improved aspiration-type mobility chamber which suppresses the growth of boundary layers and turbulence at the electrodes by employing converging-channel geometry. The distribution of small ions in air as a function of their mobility is determined from data taken with the converging-channel chamber. The results show that the distribution of positive ions is quite stable with an average mobility of about 1.35 cm2 volt−1 sec−1 (at STP). The negative-ion distribution is broader, less stable, and the average mobility shifts from about 2.1 to 1.7 cm2 volt−1 sec−1 with the addition of water vapor. The effect of Aitken nuclei upon the mobility distribution is also discussed. The results are compared with previous measurements.

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References

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Authors and Affiliations

  1. Naval Research Laboratory, 20390, Washington, D.C.

    W. A. Hoppel

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  1. W. A. Hoppel
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Hoppel, W.A. Measurement of the mobility distribution of tropospheric ions. PAGEOPH 81, 230–245 (1970). https://doi.org/10.1007/BF00875030

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  • DOI: https://doi.org/10.1007/BF00875030

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