The Transformation Period of the Initial Positive Air Ion
- 1 April 1927
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 29 (4) , 542-545
- https://doi.org/10.1103/physrev.29.542
Abstract
Time constant of transformation from initial to final positive ion. Erikson has shown that when first formed in air at atmospheric pressure the positive ion has a mobility of 1.87 cm/sec. per volt/cm, but that it quickly changes over into an ion having a mobility of 1.36. By a method essentially the same as that used by Erikson, a quantitative study was made of the rate of transformation. It was found to be dependent on the humidity of the air. At a relative humidity of 32 percent, the half-value period was found to be 0.0132 sec.; at a relative humidity of 80 percent, it is 0.0354 sec.Keywords
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