Investigation of the Dependences of the Attenuation Properties of Cryogenic Metal-Powder Filters on the Preparation Method
DC Field | Value | Language |
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dc.contributor.author | Lee, Sung Hoon | - |
dc.contributor.author | Lee, Soon-Gul | - |
dc.date.accessioned | 2021-09-02T13:33:21Z | - |
dc.date.available | 2021-09-02T13:33:21Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-04 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/76637 | - |
dc.description.abstract | We fabricated low-pass metal powder filters for use in low-noise measurements at cryogenic temperatures and investigated their attenuation characteristics for different wire-turn densities, metalpowder shapes, and preparation methods at frequencies up to 20 GHz. We used nominally 30-mu m-sized stainless-steel 304L powder and mixed it with low-temperature binders. The low-temperature binders used were Stycast 2850FT (Emerson and Cumming) with catalyst 23LV and GE-7031 varnish. A 0.1-mm insulated copper wire was wound on preformed powder-mixture bobbins in the shape of a circular rod and was encapsulated in metal tubes with the powder mixture. All the fabricated powder filters showed a large attenuation at high frequencies with a cut-off frequency near 1 GHz. For filters of the same wire length, a lower wiring density showed a larger attenuation, which implies that the amount of powder in close contact with the wire determines the attenuation. Filters made of a powder/varnish mixture showed significantly larger attenuations than those of a powder/stycast mixture, and the attenuation improved with increasing powder ratio in the mixture. The low-temperature thermal conductivities of a 2 : 1 powder/Stycast mixture and a 5 : 1 powder/varnish mixture showed similar values at temperatures up to 4.2 K. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | KOREAN PHYSICAL SOC | - |
dc.subject | DEVICES | - |
dc.title | Investigation of the Dependences of the Attenuation Properties of Cryogenic Metal-Powder Filters on the Preparation Method | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Soon-Gul | - |
dc.identifier.doi | 10.3938/jkps.72.966 | - |
dc.identifier.scopusid | 2-s2.0-85045755739 | - |
dc.identifier.wosid | 000430422600021 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.72, no.8, pp.966 - 971 | - |
dc.relation.isPartOf | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.volume | 72 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 966 | - |
dc.citation.endPage | 971 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART002337562 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordAuthor | Attenuation measurement | - |
dc.subject.keywordAuthor | Microwave filters | - |
dc.subject.keywordAuthor | Metal powder | - |
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