Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 709-711

Zeitschrift: Cryogenics

Bandnummer: 36

Heftnummer: 9

ISSN: 0011-2275

DOI Link: https://doi.org/10.1016/0011-2275(96)00060-4

Verlag: Elsevier

Abstract: 
We report on the design and test of a three-stage refrigerator, consisting of a liquid nitrogen bath with heat exchangers and two subsequent pulse tube stages. The liquid nitrogen bath serves for precooling the oscillating He-4-gas flow. The PTR stages are operated in orifice and double-inlet mode with the orifice valves, reservoirs and second-inlet valves located at ambient temperature. Er3Ni shot is used for the regenerator matrix in the coldest stage. A minimum temperature of 2.13(1)K has been achieved, which, at the average operating pressure of 19.5 bar, is only 0.19 K above the lambda-line for the superfluid phase transition of He-4. (C) 1996 Elsevier Science Limited

Harvard-Zitierstil: Thummes, G., Bender, S. and Heiden, C. (1996) Approaching the He-4 lambda line with a liquid nitrogen precooled two-stage pulse tube refrigerator, Cryogenics, 36(9), pp. 709-711. https://doi.org/10.1016/0011-2275(96)00060-4

APA-Zitierstil: Thummes, G., Bender, S., & Heiden, C. (1996). Approaching the He-4 lambda line with a liquid nitrogen precooled two-stage pulse tube refrigerator. Cryogenics. 36(9), 709-711. https://doi.org/10.1016/0011-2275(96)00060-4