Space-borne 3He refrigerator

Flight performance of a rocket-borne 3He

Flight performance of a rocket-borne 3He refrigerator

✍ L. Duband; D. Alsop; A. Lange; S. Hayata; T. Matsumoto; S. Sato 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 289 KB

A self-contained, recyclable 3He refrigerator suitable for use in zero-gravity has been developed. This refrigerator successfully flew on 5 September 1989, as part of an S-520 sounding rocket payload designed to measure the spectrum of the cosmic submillimetre background. This paper presents the cry

4He refrigerator for space

✍ J.J. Bock; L. Duband; M. Kawada; H. Matsuhara; T. Matsumoto; A.E. Lange 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 581 KB

A compact, self-contained 4He refrigerator suitable for use in space has been developed. The refrigerator is recyclable, has no moving parts, and requires only electrical connections for heaters and thermometers to operate from a T~< 4.2 K cold stage. It consists of a sorption pump filled with charc

Improved 3He/4He refrigerator

✍ G Dall'Oglio; W Fischer; L Martinis; L Pizzo 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 146 KB

The characteristics and performance of an improved 3He/4He double stage refrigerator are presented. It is based on the same principle as the previous double stage refrigerator described in reference 1. A new geometry was used to overcome both the extra thermal input due to gas convection in the cond

New 3He/4He refrigerator

✍ G. Dall'Oglio; L. Pizzo; L. Piccirillo; L. Martinis 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 217 KB

The sensitivity increase in bolometers obtained by operating temperatures of 1 K (helium-4) and 0.3 K (helium-3), with respect to standard bolometers cooled at pumped 4He temperature, represents in infrared and submillimetric astronomy a remarkable step forward in applications both on large ground t

A combined 3He-4He dilution refrigerator

✍ V.N. Pavlov; B.S. Neganov; J. Konicek; J. Ota 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 447 KB

A refrigerator capable of operating both in evaporation and dilution modes is described. The refrigerator provides preliminary cooling of investigated samples down to a starting temperature of about 0.3 K and permits the location of samples directly in the mixing chamber as well as their replacement

Unusual features of an He3 refrigerator

✍ T. Claeson; T. Wingbro 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 234 KB

adhesion. Four electrical leads were soldered on the contact areas with the pure indium.