| Автор | J Pollanen |
| Автор | H Choi |
| Автор | J P Davis |
| Автор | B T Rolfs |
| Автор | W P Halperin |
| Дата выпуска | 2009-02-01 |
| dc.description | We have developed a novel procedure for constructing high surface area silver sinter heat exchangers. Our recipe incorporates nylon fibers having a diameter of ∼50 μm and thin wires of bulk silver in the heat exchanger. In order to increase the thermal conductance of liquid helium within the heat exchanger, prior to sintering, the nylon fibers are dissolved with an organic acid leaving a network of channels. In addition, the silver wires reinforce the structural integrity, and reduce the resistance, of the silver sinter. We have constructed a <sup>3</sup>He melting curve thermometer (MCT) with this type of heat exchanger and measured the thermal time response of the liquid <sup>3</sup>He inside the MCT in the temperature range T ≈ 2 — 150 mK. We find a thermal relaxation time of ∼490 s at T ≈1 mK. We have used scanning electron microscopy (SEM) to characterize the heat exchanger and BET absorption for determination of the specific surface area. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | © 2009 IOP Publishing Ltd |
| Название | Low temperature thermal resistance for a new design of silver sinter heat exchanger |
| Тип | paper |
| DOI | 10.1088/1742-6596/150/1/012037 |
| Electronic ISSN | 1742-6596 |
| Print ISSN | 1742-6588 |
| Журнал | Journal of Physics: Conference Series |
| Том | 150 |
| Первая страница | 12037 |
| Последняя страница | 12040 |
| Аффилиация | J Pollanen; Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA |
| Аффилиация | H Choi; Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA |
| Аффилиация | J P Davis; Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA |
| Аффилиация | B T Rolfs; Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA |
| Аффилиация | W P Halperin; Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA |
| Выпуск | 1 |
