V2EX reciprocal vector

Reciprocal Vector

释义 Definition

倒易矢量 / 倒格矢:在晶体学与固体物理中,属于倒易空间(倒易晶格)的一种矢量,用来描述晶体的周期性在“频率/波数”空间中的对应关系。它常用于衍射条件、晶面间距、布里渊区等概念的表达。(在不同教材中也常写作 reciprocal-lattice vector,含义非常接近。)

发音 Pronunciation (IPA)

/rsprkl vktr/

例句 Examples

A reciprocal vector can represent a family of crystal planes.
倒易矢量可以用来表示一族晶面。

In X-ray diffraction, a peak appears when the scattering vector matches a reciprocal vector of the lattice.
在 X 射线衍射中,当散射矢量与晶格的某个倒易矢量相匹配时,就会出现衍射峰。

词源 Etymology

reciprocal 源自拉丁语 reciprocus,有“往复的、相互对应的”之意;vector 源自拉丁语 vector(“搬运者、携带者”),在数学与物理中指“具有大小和方向的量”。“reciprocal vector(倒易矢量)”这一说法来自“倒易晶格”的思想:把实空间的周期结构用倒易空间的矢量来对应表达,特别方便处理波(如 X 射线、电子波)与晶体的相互作用。

相关词 Related Words

文学与典籍 Literary Works

  • Introduction to Solid State Physics(Kittel)倒易晶格与倒易矢量用于衍射与能带基础。
  • Solid State Physics(Ashcroft & Mermin)用倒易矢量系统讨论布里渊区与散射。
  • Elements of X-Ray Diffraction(Cullity & Stock)在 XRD 推导与衍射条件中频繁出现。
  • International Tables for Crystallography(国际晶体学表)倒易空间与晶体几何的标准参考。
  • Ewald 的晶体衍射相关经典论文(Ewald sphere/构造)倒易矢量在几何衍射条件中扮演核心角色。
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