title: Wire-packed heat exchangers for dilution refrigerators.
abstract: Very simple wire-packed step heat exchangers for dilution refrigerators are described. No sintering is used in fabrication. Flow impedances and thermal resistance between the liquid and the copper wires are low. A refrigerator with five wire-packed heat exchangers in addition to a countercurrent heat exchanger attains a temperature of 11.4 mK with a single mixing chamber and 6.1 mK with two mixing chambers. High cooling power is achieved at modest (3)He circulation rates.
authors.affiliation: Department of Physics and Astronomy, Tel-Aviv University, Ramat-Aviv, Israel.
authors.forename: E
authors.initials: E
authors.lastname: Polturak
authors.forename: M
authors.initials: M
authors.lastname: Rappaport
authors.forename: R
authors.initials: R
authors.lastname: Rosenbaum