Charles University EuHIT Partner Institution

Description

The Faculty of Mathematics and Physics is one of the 17 Faculties of the Charles University in Prague. The Department of Low Temperature Physics (DLTP CUNI), led by Ladislav Skrbek, exists since 1982. Its Laboratories and helium liquefier are located in the new Cryohall, opened in 2005. The research interests of the DLTP encompass physical properties of condensed matter studied by nuclear magnetic resonance, Moessbauer spectroscopy and positron annihilation as well as superfluidity and cryogenic fluid dynamics using cryogenic gaseous, liquid and superfluid helium as working fluids. Quantum turbulence in superfluid helium is studied using second sound attenuation technique, mechanical oscillators and by visualization of selected superflows using micron size solid hydrogen tracers. A powerful dilution refrigerator is available for
experiments on quantum turbulence in the zero temperature limit. Cryogenic gas helium turbulent thermal convection is studied jointly with the Institute of Scientific Instruments of the Academy of Sciences of the Czech Republic (ISI) in Brno, where the newly developed cryostat is located.

Main tasks in EuHIT: The DLTP CUNI provides trans-national access to three facilities: the liquid helium flow visualization facility, the He II quantum turbulence facility and the helium cryostat for experimental study of Rayleigh-Bénard thermal convection (located at ISI in Brno).