Phillips, A. and McClintock, Peter V. E. (1974) Breaking the roton barrier: An experimental study of motion faster than the Landau critical velocity for roton creation in He II. Physical Review Letters, 33 (25). pp. 1468-1471. ISSN 1079-7114
Full text not available from this repository.Official URL: http://dx.doi.org/10.1103/PhysRevLett.33.1468
Abstract
We report the first observation of objects moving through He II with equilibrium drift velocities v beyond the Landau critical velocity vc,for roton creation. With T about 0.4 K, P = 25 bar, F =2 kV/cm, (v - vc) for negative ions is larger than a theoretical prediction by a factor of about 10^5. The vortex-ring nucleation rate is found to decrease with F above 300 V/cm, thus resolving apparent inconsistencies between earlier experiments.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Physical Review Letters |
| Subjects: | Q Science > QC Physics |
| Departments: | Faculty of Science and Technology > Physics |
| ID Code: | 32528 |
| Deposited By: | Professor P. V. E. McClintock |
| Deposited On: | 12 Apr 2010 14:56 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 17:12 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/32528 |
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