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arXiv physics/0103017physics.opticscond-matphysics.atm-clus
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波导中中性粒子的共振辐射压力

Resonant radiation pressure on neutral particles in a waveguide

R. Gomez-Medina, P. San Jose, A. Garcia-Martin, M. Lester, M. Nieto-Vesperinas, J. J. Saenz

摘要:

本文对空心波导中中性粒子所受的电磁力进行了理论分析。我们表明,一个非常小的(瑞利)粒子的有效散射截面可以强烈修改内的波导。散射偶极场与波导模式的耦合在新模式的出现附近诱导散射器-波导系统的共振增强后向散射状态。粒子有效截面可以与波长一样大,甚至远离任何跃迁共振。正如我们将要说明的,一个小粒子可以沿着波导轴被强烈加速,同时被高度限制在波导截面的一个狭窄区域内。

英文摘要:

A theoretical analysis of electromagnetic forces on neutral particles in an hollow waveguide is presented. We show that the effective scattering cross section of a very small (Rayleigh) particle can be strongly modified inside a waveguide. The coupling of the scattered dipolar field with the waveguide modes induce a resonant enhanced backscattering state of the scatterer-guide system close to the onset of new modes. The particle effective cross section can then be as large as the wavelength even far from any transition resonance. As we will show, a small particle can be strongly accelerated along the guide axis while being highly confined in a narrow zone of the cross section of the guide.

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。

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