Absorption of curvature radiation.
Absorption of curvature radiation.
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曲率辐射的吸收。
DOI：
10.1071/ph790049
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
V. Shaposhnikov
中科院分区：
文献类型：
--
作者：
V. Zheleznyakov;V. Shaposhnikov
讨论了曲率辐射，即相对论电子沿沿着弯曲磁力线运动时的辐射的重吸收。利用爱因斯坦系数计算了射线路径的光学深度。结果表明，如果没有朗道能级之间的跃迁，光深变为负值（脉泽效应）。然而，如果相对论粒子的能量密度小于磁场的能量密度，则脉泽作用是无效的。对于脉冲星射电辐射，假设磁能密度超过粒子能量密度，因此观测到的辐射不可能是相干曲率辐射。
The reabsorption of curvature radiation, i.e. radiation from relativistic electrons moving along curved magnetic field lines, is discussed. The optical depth for the ray path is calculated by use of the Einstein coefficients. It is shown that the optical depth becomes negative (maser effect) if transitions between Landau levels are absent. However, maser action is ineffective if the energy density of the relativistic particles is less than that of the magnetic field. For pulsar radio emission the magnetic energy density is assumed to exceed the particle energy density, so the observed emission cannot be coherent curvature radiation.