Using molecular dynamics method combining with two-temperature model, the progress of femtosecond laser-metal interaction is described completely at both continuum and atomistic length scales. 采用耦合一维双温模型的分子动力学方法,从连续及原子级的角度详尽描述了飞秒激光与金属的相互作用过程。
Based on the preformed plasma channel, the interaction length is lengthened to the centimeter scale and GeV e-beams can be obtained. 而预等离子体通道的引入,使得加速距离可大大加长,目前已经可以在厘米尺度内获得吉电子伏特的高能电子。
The relation between the gain of Raman amplifier and pump power at different effective interaction length of optical fiber is anlyzed. 研究了在不同的光纤有效作用长度时,拉曼放大器增益与抽运功率的关系;
Without any form of guiding, the laser-plasma interaction length is limited to the order of Rayleigh distance. 但如果不加以控制,则加速距离被限制在一个瑞利距离以内。
Experimental study of a Raman free electron laser with 1.19m interaction length 1.19米相互作用长度的喇曼自由电子激光器实验
Owing to the interaction between these large-scale vortexes, the length of recirculating-flow region changes periodically about the averaged value. 由于这些大尺度旋涡之间的相互作用,回流区长度在平均值附近发生拟周期性变化。
Finally, the dependence of the tolerance of the grating period, the crystal temperature and the gate power on the interaction length and the crystal temperature were analyzed. 分析了全光开关器件的极化反转光栅周期、晶体温度、控制光波长等参量的容差特性与相互作用长度和晶体温度的关系。
When the interaction length or gain coefficient is changed, the SBS threshold is changed, and the intensity value of optical limiting is altered. 当改变相互作用长度或者介质增益系数,即可以改变受激布里渊散射的产生阈值,进而改变输出脉冲空间限幅的幅值。
Discussion on interaction between different intrinsic length scale parameters for material strain localization analysis 材料应变局部化分析中不同内尺度律参数间相互作用问题的讨论
The pile stiffness is reduced by the pile-pile interaction and the effective length of piles becomes longer. 桩桩相互作用降低了桩的刚度,并使群桩的有效桩长加大了。
The numerical method of the split Fourier transform is used to investigate the correlation between the shift and nonlinear interaction length, which is induced by stimulated Raman scattering in optical fiber under the condition of the anomalous ( soliton) dispersion regime. 本文中采用离散傅里叶变换的数字计算方法对在孤子色散条件下,光纤中受激喇曼散射产生的频移与非线性相互作用长度相关进行了数字模拟和分析。
In this paper, the theoretical result of the problem of four-wave mixing in a absorbing medi-um in the Raman-Nath condition has been obtained. The dependence of the nonlinear reflectivity on the absorption coefficient and interaction length has been analysed. 本文在Raman-Nath条件下理论研究了吸收介质中的四波混频,分析了反射率与吸收系数及相互作用长度的关系。
Mode conversion efficiency has been calculated as functions of acoustic frequency, interaction length, guiding layer thickness, and acoustic drive power density. 模式转换效率可化作声波频率、声光作用长度、波导厚度和声波功率密度的函数,并利用数值计算得出结果。
The effects of varying the interaction length on SRS in high pressure H_2 改变作用区长度对高压H2受激喇曼散射的影响
Moreover, the interaction between the membrane and polymer chain length, and the effects of bending rigidity and surface tension on the deformation of the membrane are investigated. 此外,考察了膜和高分子链段之间的相互作用,高分子链长以及膜的弯曲刚性、张力对膜形变的影响。
In nonlinear optical frequency conversion process, it is desirable to maximize the product of the intensity of pump laser and the interaction length in order to achieve maximum conversion efficiency. 在光的非线性传播过程中,增加泵浦光的强度及光和物质的互作用长度是获得较高的频率转换效率的主要途径。
The effects of interaction energy between solvent and surfactant and the chain length of surfactant on the aggregation ability of surfactant and configuration of micelles were investigated. 考察了链长、分子间相互作用能对表面活性剂的聚集能力、聚集形态的影响。
No significant interaction was found between the pollinating silk length and period in haploid inducing rate and haploids per plant. 两因素实验中,花丝长短和授粉时期在对诱导单倍体的作用上是独立起作用的,但分别对单倍体诱导率和株单倍体数都有极显著的作用。
Meanwhile, we reduce the thickness of metallic film to excite long-range surface plasma wave for improving the interaction length of SHG. 我们减少金属膜的厚度来激发长程表面等离子波,这样表面等离子波在超薄金属膜上的传播距离被延长,有利于二次谐波的产生。
Based on the theoretical study and field measurements of foundation soil pile interaction for tall building with podium, some suggestions including the length and relative deflection of cantilever in the design of whole foundation for tall building with podium are proposed. 通过带裙房高层建筑与地基基础共同作用的理论研究以及实测调查,就高层建筑与裙房基础整体设计的一些问题提出看法与建议。其中包括整体设计裙房基础悬臂长度的建议值和相对弯曲参考值。
Analyzed the effect factors of Abies fabric root system strength, of which the root diameter and root length are the important effect factors, the interaction of root diameter and root length bring on the strength of Abies fabric root system. 分析了影响冷杉根系侧强曲线的因素,其中冷杉根系的根径和根长为影响其侧强曲线的主要因素,根系的抗拉强度的大小是根径与根长共同作用的结果。
The theoretical research shows that the SBS induced damage mostly happens at the entrance surface of pump laser and the threshold intensity is inversely proportional to laser pulse width and the interaction length. 研究发现,SBS作为一种破坏机制,表现为前表面破坏,且破坏阈值与激光脉宽以及作用区长度均成反比。
With change of the voltage of electron beam, the external magnetic field, the interaction length and operation frequency, the vibration of starting current is numerically calculated. 对起振电流随电子注电压、外加磁场、互作用长度以及工作频率的变化情况进行了数值计算。
Through classroom observation, the researcher analyzes and discusses the current situation of classroom interaction in Hunan Longshan senior high school from type of classroom interaction, interactive activities, frequency of classroom interaction, the length of interactive time, participation of the students and classroom atmosphere. 通过课堂观察,作者从互动的类型,活动,频率,时间,学生的参与人数以及课堂氛围分析并讨论了湖南省龙山高级中学高中英语课堂互动的现状。
But if the spacing of the coupling arms is large to some extent, there is no coupling at all. Various light frequencies have various coupling interaction length. The relation between coupling length and frequency is nonlinear. 不同的光频有不同的耦合长度,耦合长度和频率是非线性关系。
We additionally proposed the idea of two-dimensional nonlinear lens and extending the nonlinear interaction length with total internal reflection. 另外还提出了二维非线性透镜以及利用全反射延长非线性相互作用长度的概念。