Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Tuoriniemi, J."'
We studied a novel cooling method, in which $^3$He and $^4$He are mixed at the $^4$He crystallization pressure at temperatures below $0.5\,\mathrm{mK}$. We describe the experimental setup in detail, and present an analysis of its performance under va
Externí odkaz:
http://arxiv.org/abs/1911.06083
We studied the thermal conductivity of superfluid $^3$He in a 2.5 mm effective diameter and 0.15 m long channel connecting the two volumes of our experimental assembly. The main volume contained pure solid $^4$He, pure liquid $^3$He and saturated liq
Externí odkaz:
http://arxiv.org/abs/1907.05197
Publikováno v:
Phys. Rev. B 99, 054502 (2019)
In the cooling concept by adiabatic melting, solid $^{4}$He is converted to liquid and mixed with $^{3}$He to produce cooling power directly in the liquid phase. This method overcomes the thermal boundary resistance that conventionally limits the low
Externí odkaz:
http://arxiv.org/abs/1810.10432
In pure superfluid $^3$He-B at ultra-low temperatures, quartz tuning fork oscillator response is expected to saturate when the dissipation caused by the superfluid medium becomes substantially smaller than the internal dissipation of the oscillator.
Externí odkaz:
http://arxiv.org/abs/1807.05084
Publikováno v:
Phys. Rev. B 94, 224514 (2016)
Bulk superfluid helium supports two sound modes: first sound is an ordinary pressure wave, while second sound is a temperature wave, unique to inviscid superfluid systems. These sound modes do not usually exist independently, but rather variations in
Externí odkaz:
http://arxiv.org/abs/1607.08767
Surface waves on both superfluid 3He and 4He were examined with the premise, that these inviscid media would represent ideal realizations for this fluid dynamics problem. The work on 3He is one of the first of its kind, but on 4He it was possible to
Externí odkaz:
http://arxiv.org/abs/1504.02344
Publikováno v:
J. Low Temp. Phys. 175, 739 (2014)
A concentration-saturated helium mixture at the melting pressure consists of two liquid phases and one or two solid phases. The equilibrium system is univariant, whose properties depend uniquely on temperature. Four coexisting phases can exist on sin
Externí odkaz:
http://arxiv.org/abs/1312.4763
Autor:
Rysti, J., Tuoriniemi, J.
Publikováno v:
J. Low Temp. Phys. 177, 133 (2014)
Immersed mechanical resonators are well suited for probing the properties of fluids, since the surrounding environment influences the resonant characteristics of such oscillators in several ways. Quartz tuning forks have gained much popularity in rec
Externí odkaz:
http://arxiv.org/abs/1304.2795
Autor:
Riekki, T. S.1 (AUTHOR) tapio.riekki@aalto.fi, Tuoriniemi, J. T.1 (AUTHOR), Sebedash, A. P.2 (AUTHOR)
Publikováno v:
Journal of Low Temperature Physics. Oct2020, Vol. 201 Issue 1/2, p128-138. 11p.
We studied a novel cooling method, in which $^3$He and $^4$He are mixed at the $^4$He crystallization pressure at temperatures below $0.5\,\mathrm{mK}$. We describe the experimental setup in detail, and present an analysis of its performance under va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c65475b747b4138441c6048a3ca55ab
https://aaltodoc.aalto.fi/handle/123456789/103322
https://aaltodoc.aalto.fi/handle/123456789/103322