rf properties of an oxide-superconductor half-wave resonant line

Delayen, J. R.; Goretta, K. C.; Poeppel, R. B.; Shepard, K. W.
March 1988
Applied Physics Letters;3/14/1988, Vol. 52 Issue 11, p930
Academic Journal
Cylindrical rods of YBa2Cu3O7-δ from 0.6 to 1.9 mm in diameter and up to 565 mm long have been used as the center conductor of a half-wave resonant coaxial line. The resonant line can be immersed in liquid nitrogen, which provides excellent cooling of the current-carrying superconducting surface, even in the presence of substantial rf losses. Such superconducting resonant lines have been operated at frequencies of a few hundred MHz and at rf surface magnetic fields up to 150 G at 77 K.


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