Abstract
The mobilities of the and ions in helium were measured as a function of and gas temperature for °K. At temperatures below 200 °K and at very low , conversion of the to was observed to take place. Mobilities of were determined at 115 and 76 °K. The zero-field mobility of was found to increase with decreasing temperature and was in excellent agreement with the theoretical predictions of Dickinson. Both the and mobilities decreased with decreasing temperature. The mobilities were all significantly lower than the Langevin polarization limit, and were lower even than the mobilities of the heavier ion.
- Received 20 April 1970
DOI:https://doi.org/10.1103/PhysRevA.2.1154
©1970 American Physical Society