Abstract
In this paper we report the results of experiments from which we have obtained the value of the critical velocity for quantized-vortex-ring creation by positive ions in liquid helium II. We have investigated the temperature range between 1.0 and 1.5°K. The critical velocity depends on temperature above 1.1°K.
- Received 14 August 1968
DOI:https://doi.org/10.1103/PhysRevLett.21.1738
©1968 American Physical Society
