共查询到18条相似文献,搜索用时 93 毫秒
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6 电偶极振子的Ec 线图图 2中F(r,π/2 ,t)图线的零点 ,极值点、拐点等反映了什么 ?为说明这些问题我们需先作电偶极振子的Ec 线图 .在 φ =φ0 (定值 )的平面内 ,Ec 线满足的微分方程是drEcr=rdθEcθ将式 ( 4)代入上式 ,消去相同因子 ,得dr2cosθ=rdθsinθ即 drr =2 cosθdθsinθ =d(sin2 θ)sin2 θ解上式得 1rsin2 θ=恒量 ( 1 4′)或 G(r,θ) =1krsin2 θ=K(恒量 ) ( 1 4 )式 ( 1 4 )中k仍为 wc,值得注意Ec 线形状不随时间变化 .用类似于求E线的作图法画出E… 相似文献
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推算偶极振子电磁场的简单方法 总被引:3,自引:2,他引:1
偶极振子电磁场的分布和变化规律可以由麦克斯韦方程组严格计算出来,但由于计算繁杂和数学知识的限制,电磁学书中只进行定性讨论或直接给出结果再进行分析,学生不易接受.本文提出的图象、量纲分析法使偶极振子电磁场的求解大为简化,且物理概念清晰,在教学实践中效果较好. 相似文献
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讨论了使用MCHF方法优化径向波函数以获取大量原子参数的方法,由得到的波函数计算了FeXXI离子的相对论与非相对论能级,将计算能级与已有的实验结果进行了比较,对电偶极,磁偶极以及电四极的振子强度进行了非相对论与相对论修正的计算,对非相对论计算的振子强度,长度与速度两种表示符合较好。 相似文献
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简要叙述了高温转动核电偶极巨共振实验研究的历史和现状,并着重介绍了现存的一些问题及新的探索. The history and current status of the experimental study of giant dipole resonance in hot rotating nuclei has been reviewed.Some open problems and new development are stressed. 相似文献
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In this Letter, we obtain the quantum holonomies for a neutral particle with a permanent electric dipole moment based on the analogue effects of the He-McKellar-Wilkens effect and the Scalar Aharonov-Bohm effect and show a new proposal for implementing one-qubit quantum gates. 相似文献
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We consider the transmission of electric dipole radiation through an interface between two dielectrics, for the case of a vertical dipole. Energy flows along the field lines of the Poynting vector, and in the optical near field these field lines are curves (as opposed to optical rays). When the radiation passes through the interface into a thicker medium, the field lines bend to the normal (as rays do), but the transmission angle is not related to the angle of incidence. The redirection of the radiation at the interface is determined by the angle dependence of the transmission coefficient. This near-field redistribution is responsible for the far-field angular power pattern. When the transmission medium is thinner than the embedding medium of the dipole, some energy flows back and forth through the interface in an oscillating fashion. In each area where field lines dip below the interface, an optical vortex appears just above the interface. The centers of these vortices are concentric singular circles around the dipole axis. 相似文献
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W. Bernreuther 《Zeitschrift fur Physik C Particles and Fields》1992,56(Z1):S97-S100
The forthcoming experiment [1] on the anomalous magnetic moment of the muon will be able to search also for an electric dipole
momentd
μ of the muon with increased sensitivity. A brief survey is given on what various models of CP violation predict ford
μ. 相似文献
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The Stark effect of CH3F is extensively used as a calibration standard in laser Stark spectroscopy. The accepted value for the dipole moment of the ground vibrational state of CH3F is less accurate than the precision of laser Stark measurements, and questions have also been raised about the literature value. New molecular beam spectroscopy measurements have been made of the ratio of the Stark effect in the J = 1, K = 1 and J = 2, K = 2 CH3F states to that of the 0110 vibrational state of OCS. The results were and . This produces a dipole moment of 1.85840 D with precision relative to OCS of 10 ppm and absolute accuracy of 43 ppm. 相似文献
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Simulations are used to investigate for the first time the anisotropy of the dielectric response and the effects of an applied electric field E(ex) on the phase diagram of water. In the presence of electric fields ice II disappears from the phase diagram. When E(ex) is applied in the direction perpendicular to the ac crystallographic plane the melting temperatures of ices III and V increase whereas that of ice Ih is hardly affected. Ice III also disappears as a stable phase when E(ex) is applied in the direction perpendicular to the ab plane. E(ex) increases by a small amount the critical temperature and reduces slightly the temperature of the maximum density of liquid water. The presence E(ex) modifies all phase transitions of water but its effect on solid-solid and solid-fluid transitions seems to be more important and different depending on the direction of E(ex). 相似文献
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