On the effect of a magnetic field on the spectrum of incoherent scattering
On the effect of a magnetic field on the spectrum of incoherent scattering
复制标题
磁场对非相干散射光谱的影响
DOI：
10.1029/jz065i012p03955
复制
发表时间：
1960
期刊：
影响因子：
--
通讯作者：
T. Laaspere
中科院分区：
文献类型：
--
作者：
T. Laaspere
在小于德拜长度的散射尺度上分析了所施加磁场的影响。如果散射波矢量在任何地方都垂直于磁场矢量，并且假设每个电子围绕磁力线不受干扰地旋转，则在第一个近似中，散射谱将由线组成。线的间隔等于电子旋磁频率。如果电子的平均回转半径与散射尺度相比较大，则线谱的包络线仅由在没有任何磁场的情况下存在的热多普勒谱曲线给出。然而，随着平均回转半径减小，中心线中出现的功率部分增加。该报告中给出的曲线表明，当散射波矢量和磁力线之间的角度从 90 度减小时，线谱会迅速变得模糊。 （授权）
The effect of an applied magnetic field was analyzed at scales of scattering smaller than the Debye length. If the scattering-wave vector is directed everywhere perpendicular to the magnetic-field vector and each electron is assumed to gyrate unperturbed about a magnetic line of force, the spectrum of scattering will, in the first approximation, consist of lines. The separation of the lines is equal to the electron gyromagnetic frequency. If the average radius of gyration of the electrons is large compared to the scale of scattering, the envelope of the line spectrum is given simply by the thermal Doppler-spectrum curve that would exist in the absence of any magnetic field. As the average radius of gyration is decreased, however, an increasing fraction of power appears in the central line. Curves given in this report reveal that the line spectrum gets smeared rapidly as the angle between the scattering-wave vector and the magnetic lines of force is decreased from 90 deg . (auth)