Abstract
Experimental measurements of the linewidths of plasma resonances in two-dimensional pools of both positive and negative ions trapped below the surface of superfluid 4He have been used to deduce the mobilities of these ions as functions of temperature (20 mK to 0.5 K) and depth below the surface. At the higher temperatures the mobilities can be described well by theories based on the scattering of bulk phonons, but at the lower temperatures the mobility becomes markedly depth-dependent and is therefore presumably limited to a significant extent by ripplon scattering. A theory of ripplon-limited mobility is described and compared with experiment. No anomaly in the mobility has been observed at the temperature at which crystallization of the ion pool is expected to occur.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
