Dry demagnetization cryostat for sub-millikelvin helium experiments: refrigeration and thermometry

I. Todoshchenko, J. -P. Kaikkonen, R. Blaauwgeers +2

We demonstrate successful "dry" refrigeration of quantum fluids down to $T=0.16$\,mK by using copper nuclear demagnetization stage that is pre-cooled by a pulse-tube-based dilution…