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You searched on: Topic Area: Superconductors

Displaying records 11 to 20 of 189 records.
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11. Dependence of the Critical Current of YBa^d2^Cu^d3^O7^d-d^ Coated Conductors on In-Plane Bending
Topic: Superconductors
Published: 9/3/2008
Authors: Daniel Cornelis van der Laan, John (Jack) Ekin
Abstract: A new method to measure the effect of in-plane bending on the critical current of YBa^d2^Cu^d3^O^d7-d^ coated conductors is presented. Such bending mode can be important in transmission cables, saddleback magnets, and double-pancake windings. A linea ...

12. Operation of an X-ray transition-edge sensor cooled by tunnel junction refrigerators
Topic: Superconductors
Published: 1/19/2008
Authors: Nathan A Tomlin, James A Beall, Gene C Hilton, Kent D Irwin, Galen C O'Neil, Daniel Richard Schmidt, Leila R Vale, Joel Nathan Ullom
Abstract: We demonstrate successful cooling of an X-ray transition-edge sensor (TES) using solid-state refrigerators based on normal-metal/insulator/superconductor (NIS) tunnel junctions. Above the TES transition temperature (Tc), we use Johnson noise thermome ...

13. More Diamagnetism Demonstrations
Topic: Superconductors
Published: 2/1/2003
Authors: Chris Conery, Loren Frederick Goodrich, Theodore C Stauffer
Abstract: The availability of very strong permanent magnets allows observation of phenomena previously difficult to see. The diamagnetism of water and diamagneticly stabilized magnetic levitation are now easy to demonstrate.

14. Single-Cooper-Pair Transistors: Requirements for Robust 2e Periodicity
Topic: Superconductors
Published: 1/3/2003
Authors: Jose Alberto Aumentado, Mark W Keller, John M. Martinis
Abstract: The superconducting analog of the single-electron transistor (SET), the single-Cooper-pair transistor (SCPT), is comprised of two ultrasmall tunnel junctions in series forming an island (see Figure 1(a)). Transport through the SCPT depends on the ele ...

15. Superconductor Contacts
Topic: Superconductors
Published: 1/1/2003
Author: John (Jack) Ekin

16. Refrigeration Methods for Superconductors
Topic: Superconductors
Published: 12/1/2002
Author: Ray Radebaugh
Abstract: This chapter reviews various methods commonly used for achieving the cryogenic temperatures required of superconducting materials. The problems associated with cryogenic refrigerators (cryocoolers), such as poor reliability, low efficiency, electrom ...

17. A Flexible High-Current Lead for Use in High-Magnetic-Field Cryogenic Environments
Topic: Superconductors
Published: 8/1/1999
Authors: P Kirkpatrick, John (Jack) Ekin, S L Bray

18. Oxygen Annealing of YBCO/Gold Thin-Film Contacts
Topic: Superconductors
Published: 12/1/1998
Authors: Xu Yizi, John (Jack) Ekin, Cameron C. Clickner, R L Fiske

19. High Critical-Current Measurements in Liquid and Gaseous Helium
Topic: Superconductors
Published: 11/1/1998
Authors: Loren Frederick Goodrich, L T Medina, Theodore C Stauffer

20. Fatigue-Induced Electrical Degradation of Composite High-Purity/High-Strength Aluminum Rings at 4 K
Topic: Superconductors
Published: 1/1/1998
Authors: S L Bray, John (Jack) Ekin, M J Nilles

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