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Dynamic quench of NbTi in pressurized He4: 1. dual lambda transition during transient heat transfer

✍ Scribed by C. Chuang; T.H.K. Frederking

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 584 KB
Volume: 22
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(82)90089-3

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✦ Synopsis

New transient phase transition phenomena are reported for near-isobaric temperature excursions caused by a step input in heating power supplied from a composite conductor Nb Ti/Cu to superfluid He II above its thermodynamic critical pressure Pc. Transient triple phase phenomena are found not only below Pc but also above Pc during dua/-lambda transitions from He II to He I and from pseudo-liquid to pseudo-vapour of He/. Consequences are presented for stabilization of superconducting magnets.

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Dynamic quench of NbTi in pressurized He

Dynamic quench of NbTi in pressurized He4: II. Single transition during temperature excursion across the transposed critical curve

✍ Y.I. Kim; Y. Kamioka; T.H.K. Frederking 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 433 KB

Transient higher order phase transitions have been observed above the critical pressure at 3 bar during near-isobaric phase transitions which intersect the transposed critical curve (TCC). Application of a step input in power from the composite Nb Ti/Cu to He 4 at 4.2 K causes temperature changes wi