The induction of a propagating normal zone (quench) in a superconductor by local energy release
✍ Scribed by C. Schmidt
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 525 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
✦ Synopsis
E ~per/ments were performed to measure the rain/mum energy, E, of an instantaneous point source, needed to mduce a propagating normal transition (quem?h) m a superconductor. The energy pulse was supphed to the superconductor by a mm/atur/zed heater element which had a thermal time constant of "" 20 ps. E~ depends on the current d~.str/but/on m the conductor and/s lower for a nonhomogenenus distr/butmn. A computer cah'ulat/on ,solvmg the nonhomogeneou.~ heat equation agrees w/Ih/n a tactor o/two with the results h~r ad/abattc conditions (no radtal heat transfer) without adlustable parameters The results obtamed vwth the cnnductor placed m hqu/d helium ~'uuld be htted mto the ~:alculat~on wtth parameters close to measured transtent heat transter data lle.huln halh teml)erallJre K t'rllical lernpe.falure at t =() i) = ('~,,, -'T',, ) ( I -///~ ) + '~, Pfenlalure n~)rlnal lian.'.;ILl()llS i)l .'.;iJper{.';~nduqllrlg nla~,nt'l,., dLil'in~, Ihe I'l[.~[ erler~,lzlng are .'.;i.ipp~)sed hi beº Lndu~'ed hy a h~.'al relea~,e ol ITle.~..'haltl~.'al eºrterg;y I-', The Pllef~,y rele.ase. may {)rlglnale In Ihe. ,.,upet'~.'~nduc[oi ilsell, hy rnicr~.wleldt[i ~ I{)r exalnple,' } ~r he due I~)tracks In epuxv tmpreF,~lallon 'l ~[ IrlCll()llal he.allnf.,, by wife m{wenlerll ' ~ The energy ol an in'