A study of the destruction of superconductivity in wires by alternating current

✍ Scribed by V.N. Totubalin

• Publisher: Elsevier Science
• Year: 1970
• Tongue: English
• Weight: 292 KB
• Volume: 10
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(70)90092-5

✦ Synopsis

to 500 and 5 000 atm ( x 1 "013 x l0 s N/m 2) for helium and nitrogen respectively. At these pressures helium and nitrogen solidify at their boiling temperatures as well as at temperatures far beyond this. Therefore when V is raised, a solid sheath of high electric resistance is formed. By cold emission of the tungsten tip in this sheath, positive or negative space charges are built up for positive or negative tip tension. These charges diminish the field strength at the tip surface and reduce the emission current to zero. However, if the tension increases beyond a critical value Vc, the isolation is broken, the current heats the solid and melts it. Then the current is triggered.

It will be necessary to extend our measurements based on the effect described above to other temperatures, also to below the ).-point and to rotating He IL