,High-Tc Superconductor Detection Coils for a Magnetic Resonance System

来源 :中国物理快报(英文版) | 被引量 : 0次 | 上传用户:loveag
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Considering that in a magnetic resonance system, if the detection coil contributes dominantly to the system noise, the performance of the whole system can certainly be improved by switching to a detection coil made of a high-temperature superconductor, and using YBa2Cu3O7 thinfilms on 25 × 25 mm2 LaAIO3 substrates, we have prepared two kinds of detection coils: single-coil and two-coil. Encouragingly, their quality factors are measured to be Q > 2500 for two-coil (at 22.566MHz and 77K) and Q > 5500 for single-coil (at 92.3MHz and 77K),respectively. Here, we describe the details of the design, fabrication and testing of the coils.
其他文献
Thermal conductivity in the normal direction of ultra-thin dielectric films is predicted by molecular dynamics calculations for argon crystal. For film thicknes
期刊
The influence of surface hydrogen coverage on the electron field emission of diamond films was investigated by high-resolution electron energy loss spectroscopy
期刊
The deposition, diffusion and coalescence processes appeared in the surface growth of compact or liquid-like clusters system are studied. By introducing a criti
期刊
Non-planar and non-linear second sound wave are experimentally investigated in an open He Ⅱ bath. It is found that second sound wave characterized by a negativ
期刊
The Pd39Ni10Cu30P21 bulk metallic glass is isothermally relaxed under various pressures. The degree of thestructural relaxation is evaluated in terms of the en
期刊
Ab initio molecular dynamics simulations are performed on small single wall nanotubes. By structural relaxation,the equilibrium C-C bond lengths and bond angles
期刊
Using the admittance spectroscopy technique, energy levels of subbands in SiGe/Si quantum well are studied.The value of activation energy increases with increas
期刊
Rh-doped barium titanate (BaTiO3) epitaxial thin films have been fabricated on SrTiO3 (100) substrates by pulsed laser deposition. The nonlinear optical propert
期刊
We investigated the influences of a uniform and a nanoscaled periodic magnetic field on electrons resonant tunneling through quantum-wire arrays (QWA). It is sh
期刊
The emission spectra of a two-level atom moving in an electromafneric fiekd are studied We find that there that there is a shift in the peak position and that e
期刊