• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>other >Axially Uniform Magnetic Field-Modulation Excitation for ElectronParamagnetic Resonance in Rectangular and Cylindrical Cavities by SlotCutting
【2h】

Axially Uniform Magnetic Field-Modulation Excitation for ElectronParamagnetic Resonance in Rectangular and Cylindrical Cavities by SlotCutting

机译：电子的轴向均匀磁场调制激励狭槽在矩形和圆柱形腔中的顺磁共振裁切

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In continuous-wave (CW) Electron Paramagnetic Resonance (EPR) a low-frequency time-harmonic magnetic field, called field modulation, is applied parallel to the static magnetic field and incident on the sample. Varying amplitude of the field modulation incident on the sample has consequences on spectral line-shape and line-height over the axis of the sample. Here we present a method of coupling magnetic field into the cavity using slots perpendicular to the sample axis where the slot depths are designed in such a way to produce an axially uniform magnetic field along the sample. Previous literature typically assumes a uniform cross-section and axial excitation due to the wavelength of the field modulation being much larger than the cavity. Through numerical analysis and insights obtained from the eigenfunction expansion of dyadic Green’s functions, it is shown that evanescent standing-wave modes with complex cross-sections are formed within the cavity. From this analysis, a W-band (94 GHz) cylindrical cavity is designed where modulation slots are optimized to present a uniform 100 kHz field modulation over the length of the sample.
机译：在连续波（CW）电子顺磁共振（EPR）中，平行于静态磁场并入射到样品上的是一个称为时域调制的低频时谐磁场。入射到样品上的场调制幅度的变化会影响样品轴上的光谱线形和线高。在这里，我们介绍了一种使用垂直于样品轴的缝隙将磁场耦合到空腔中的方法，其中缝隙深度的设计方式是沿样品产生轴向均匀的磁场。由于场调制的波长比空腔大得多，因此以前的文献通常假定截面和轴向激励均匀。通过数值分析和从二进格林函数本征函数展开获得的见解，可以看出，在腔体内形成了具有复杂横截面的e逝驻波模式。根据该分析，设计了一个W波段（94 GHz）圆柱腔，其中优化了调制槽，以在样品的整个长度上提供均匀的100 kHz场调制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号