3) optical-phonon scattering
光学声子散射
1.
A variational method and the force balance equation are adopted to investigate the influence of optical-phonon scattering(including interface optical phonons and half-space optical phonons) on the mobility of a two-dimensional electron gas in a wurtzite AlN/GaN heterostructure by taking energy band bending and finite barrier into account.
考虑导带弯曲和有限高势垒,利用变分法和力平衡方程研究了界面光学声子和半空间光学声子散射对纤锌矿AlN/GaN异质结中二维电子气(2DEG)迁移率的影响,数值计算了各支光学声子作用下迁移率随电子面密度及温度的变化。
2.
A variational method,combined with solving the force balance equation is adopted to investigate the biaxial strain and hydrostatic pressure influence on the electronic mobility in a strained wurtzite AlN/GaN heterojunction within the temperature range dominated by optical-phonon scattering.
本文采用将变分法与求解力平衡方程相结合的方法,在光学声子散射起主要作用温区,从理论上讨论在其散射下,应变纤锌矿AlN/GaN单异质结中电子的迁移率及其应变和压力效应。
4) hole phonon scattering
空穴光学声子散射
5) scattering acoustic field
散射声场
1.
A method to solve the scattering acoustic field of complex target was proposed for the near-field scattering characteristics of an underwater target in high-frequency.
针对水下目标高频近场散射特性,提出了一种求解水下复杂目标散射声场的方法。
6) phonon scattering
声子散射
1.
Effect of phonon frequency on phonon scattering in isotope-doped Si;
声子频率对同位素掺杂硅声子散射的影响
2.
This paper focuses on the phonon frequency effect and the isotope-doped concentrates effect on the phonon scattering in isotope-doped Si.
掺杂点缺陷对声子的散射是影响电绝缘体热导率的重要机制之一,其中声子频率和掺杂点缺陷浓度是影响声子散射的重要因素。
3.
Phonons play a great role in the microcosmic mechanism of heat transfer of silicon,the process of phonon scattering in doped silicon is studied by molecular dynamics simulation with high performance computers in this paper, then the composition of energy is analyzed after scattering,in which the greater transmitted energy means the high thermal conductivity qualitatively.
声子导热是硅晶体中的主要导热微观机制,本文借助高性能计算机,利用分子动力学方法研究了掺杂点缺陷对硅中声子散射的过程,定量分析声子散射后的能量组成,透射能量多即定性理解为导热性好。
补充资料:弹性散射和非弹性散射
弹性散射和非弹性散射 elastic scattering and inelastic scattering 使用粒子间碰撞来研究粒子的性质、相互作用和内部结构的两种情况。如果碰撞过程中两粒子间只有动能的交换,粒子类型、其内部运动状态和数目并无变化,则称为弹性散射或弹性碰撞。如果碰撞过程中除了有动能交换外,粒子的数目、类型和内部状态有所改变或转化为其他粒子,则称为非弹性散射或非弹性碰撞。 散射过程的研究对于了解许多物理现象具有很重要的意义。例如E.卢瑟福对a粒子被物质散射的研究,提出原子的有核模型;J.弗兰克和G.L.赫兹的电子与原子碰撞实验证实了N.玻尔的定态假设;建造高能加速器就是利用被加速粒子的散射过程来研究粒子的性质、相互作用和相互转化的规律。60年代末到70年代初利用高能轻子对质子和中子的深度非弹性散射的实验,发现质子和中子内部存在点状结构。 |
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条