A compact dilution refrigerator with vertical heat exchangers for operation to 2 mK

Autor:	I. E. Miller, C. J. Kennedy, M. G. Ward, D. A. Jackson, George R. Pickett, D. J. Hayward, Yu. M. Bunkov, A. M. Guénault, T. R. Nichols
Rok vydání:	1991
Předmět:	Materials science Refrigerator car chemistry.chemical_element Thermodynamics Mechanics Condensed Matter Physics Atomic and Molecular Physics and Optics chemistry Phase (matter) Magnet Heat exchanger Micro heat exchanger General Materials Science Dilution refrigerator Vibrating wire Helium
Zdroj:	Journal of Low Temperature Physics. 83:257-272
ISSN:	1573-7357 0022-2291
DOI:	10.1007/bf00683626
Popis:	We describe a compactly designed dilution refrigerator with closely packed, vertical heat exchangers. The refrigerator reaches a temperature of 2 mK and is easily constructed, since the sintered heat exchangers are straight units. Vibrating wire resonators are employed in the mixing chamber as diagnostic tools, which may act as both thermometers and phase-boundary level indicators. There is a design problem in the vertical arrangement, namely, the sumps on the concentrated phase side that can slowly fill with dilute phase and degrade the performance. The problem is solved by draining the superfluid4He component in any collected dilute phase through superleaks into the mixing chamber.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7bcb2783d540cc502987f39b9758492 https://doi.org/10.1007/bf00683626 Zobrazit plný text záznamu Full text from SpringerLink