磁目标早期响应中的表面模和多幂律结构
Surface modes and multi-power law structure in the early-time response of magnetic targets
摘要：
它最近被证明[P。Weichman，Phys. Rev. Lett. { \bf 91}，143908（2003）]，在快速终止的电磁脉冲之后，来自高导电目标的散射电场在早期显示出普遍的$t^{-1/2}$幂律发散。现在表明，对于强导磁目标，$μ_c/μ_b \gg 1$，其中$μ_b$是背景磁导率，早期制度分为两个不同的幂律制度，早期-早期$t^{-1/2}$的行为交叉到$t^{-3/2}$在晚期-早期的时间，反映了磁表面模式的频谱。后者证实了从含铁目标的数据，其中$μ_c/μ_b = {\cal O}(10^2)$，并为早期早期制度是看不见的狭窄。
英文摘要：
It was recently demonstrated [P. B. Weichman, Phys. Rev. Lett. {\bf 91}, 143908 (2003)] that the scattered electric field from highly conducting targets following a rapidly terminated electromagnetic pulse displays a universal $t^{-1/2}$ power law divergence at early time. It is now shown that for strongly permeable targets, $μ_c/μ_b \gg 1$, where $μ_b$ is the background magnetic permeability, the early time regime separates into two distinct power law regimes, with the early-early time $t^{-1/2}$ behavior crossing over to $t^{-3/2}$ at late-early time, reflecting a spectrum of magnetic surface modes. The latter is confirmed by data from ferrous targets where $μ_c/μ_b = {\cal O}(10^2)$, and for which the early-early time regime is invisibly narrow.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
