Počet záznamů: 1
Electric response in superfluid helium
- 1.0460919 - FZÚ 2017 RIV NL eng J - Článek v odborném periodiku
Chagovets, Tymofiy
Electric response in superfluid helium.
Physica B-Condensed Matter. Roč. 488, May (2016), s. 62-66. ISSN 0921-4526. E-ISSN 1873-2135
Grant CEP: GA ČR GP13-03806P
Institucionální podpora: RVO:68378271
Klíčová slova: superfluid helium * electric response * second sound * ions in He II
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.405, rok: 2016
We report an experimental investigation of the electric response of superfluid helium that arises in the presence of a second sound standing wave. It was found that the signal of the electric response is observed in a narrow range of second sound excitation power. The linear dependence of the signal amplitude has been derived at low excitation power, however, above some critical power, the amplitude of the signal is considerably decreased. It was established that the rapid change of the electric response is not associated with a turbulent regime generated by the second sound wave. A model of the appearance of the electric response as a result of the oscillation of electron bubbles in the normal fluid velocity field in the second sound wave is presented. Possible explanation for the decrease of the electric response are presented.
Trvalý link: http://hdl.handle.net/11104/0261646
Počet záznamů: 1