Title :
Progress in absolute determination of /spl Phi//sub 0/ using superconducting magnetic levitation
Author :
Shiota, F. ; Miki, Y. ; Namba, A. ; Nezu, Y. ; Sakamoto, Y. ; Morokuma, T. ; Hara, K.
Author_Institution :
Nat. Res. Lab. of Metrol., Ibaraki, Japan
fDate :
June 27 1994-July 1 1994
Abstract :
Superconducting magnetic levitation system for the determination of magnetic flux quantum has been improved significantly in flux-up system using Josephson voltage. Studies are also in progress to improve mechanical measurement relevant to the floating body toward sub-ppm level uncertainty.<>
Keywords :
Josephson effect; constants; magnetic flux; magnetic levitation; magnetic variables measurement; Josephson voltage; floating body; magnetic flux quantum; mechanical measurement; quantised Hall resistance; sub-ppm level uncertainty; superconducting magnetic levitation; vertical displacement; Coils; Electric resistance; Immune system; Laboratories; Magnetic flux; Magnetic levitation; Potential energy; Resistors; Uncertainty; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333179
