搜索结果: 46-60 共查到“知识库 原子分子物理学其他学科”相关记录106条 . 查询时间(2.937 秒)
Van der Waals interaction between an atom with spherical plasma shell
Van der Waals interaction n atom spherical plasma shell
2010/11/8
We consider the van der Waals energy of an atom near the infinitely thin sphere with finite conductivity which model the fullerene. We put the sphere into spherical cavity inside the infinite dielectr...
Controlling the quantum stereodynamics of ultracold bimolecular reactions
Controlling quantum stereodynamics ultracold bimolecular reactions
2010/11/5
Chemical reaction rates often depend strongly on stereodynamics, namely the orientation and movement of molecules in three-dimensional space. An ultracold molecular gas, with a temperature below 1 uK...
Measurement-induced quantum entanglement recovery
Measurement-induced quantum entanglement recovery
2010/11/4
By using photon pairs created in parametric down conversion, we report on an experiment, which demonstrates that measurement can recover the quantum entanglement of two qubit system in a pure dephasi...
Dirac Equation For Cold Atoms In Artificial Curved Spacetimes
Dirac Equation Cold Atoms Artificial Curved Spacetimes
2010/11/11
We argue that the Fermi-Hubbard Hamiltonian describing the physics of ultracold atoms on optical lattices in the presence of artificial non-Abelian gauge fields, is exactly equivalent to the gauge the...
Non-relativistic Gravity in Entropic Quantum Dynamics
Non-relativistic Gravity Entropic Quantum Dynamics
2010/10/29
Symmetries and transformations are explored in the framework of entropic quantum dynamics. Two conditions arise that are required for any transformation to qualify as a symmetry. The heart of this wor...
Casimir-Polder interaction between an atom and a dielectric grating
Casimir-Polder interaction atom dielectric grating
2010/10/29
We develop the scattering approach to calculate the exact dispersive Casimir-Polder potential between a ground-state atom and a rectangular grating. Our formalism allows, in principle, for arbitrary v...
We present a detailed rate analysis for a hybrid quantum repeater assuming perfect memories and using optimal probabilistic entanglement generation and deterministic swapping routines. The hybrid quan...
Collective modes of monolayer, bilayer, and multilayer fermionic dipolar liquid
Collective modes of monolayer bilayer multilayer fermionic dipolar liquid
2010/10/27
Motivated by recent experimental advances in creating polar molecular gases in the laboratory,
we theoretically investigate the many body effects of two- dimensional dipolar systems with the
anisotr...
准确测定高放玻璃的比表面积对评估高放玻璃的腐蚀速度和核素的释放速率极为重要。本研究首次将反向气相色谱技术用于模拟高放玻璃腐蚀过程的比表面积研究。研究结果表明，玻璃比表面积随时间的变化曲线分为线性快速增加阶段、中间过渡阶段、缓慢增加平台阶段，玻璃腐蚀后最终的比表面积取决于玻璃与地下水的相对量的比例，浸泡的地下水相对量增加，则最终腐蚀后的玻璃的比表面积相应增加，玻璃/地下水体表比（S/V）为1 500...
176Hf（n，2n）175Hf反应截面测量
Hf 反应截面 相对测量
2011/8/17
采用相对测量技术，以活化法对13.4～14.8 MeV范围内的176Hf(n，2n)175Hf反应截面进行了测量。样品固定在距离D-T中子源20 cm处的圆环的不同位置上进行中子辐照，采用93Nb(n，2n)92Nbm作为监测反应，活化产物采用高纯锗探测器进行了测量，所得14 MeV附近的176Hf(n，2n)175Hf反应截面实验值为（2 100±85）mb，对实验结果与公开文献值和ENDF/B...
Single Color Centers Implanted in Diamond Nanostructures
Single Color Centers Diamond Nanostructures
2010/10/27
The development of materials processing techniques for optical diamond nanostructures containing a single color center is an important problem in quantum science and technology. In this work, we prese...
Quantum Dynamics of Radical-Ion-Pair Reactions
Quantum Dynamics Radical-Ion-Pair Reactions
2010/10/20
Radical-ion-pair reactions were recently shown to represent a rich biophysical laboratory for the application of quantum measurement theory methods and concepts, casting doubt on the validity of the t...
基于欧美人种人体模型比吸收分数比较
人体模型 比吸收分数 MCNP4C 肺通用源卡
2011/8/19
本文以肺（左肺和右肺）为源器官，利用MCNP4C程序对数学模型进行模拟计算，求出靶器官的比吸收分数值，并对不同成年男性模型、年龄模型和性别模型的比吸收分数（SAFs）进行分析比较。结果表明：小孩的比吸收分数比成年人高，女性的比男性的高。对于源器官与靶器官同体的，SAFs伴随能量升高在0.01～0.05 MeV之间有明显的下降趋势；不同体的，SAFs伴随能量升高在0.01～0.05 MeV之间有明显...
高能γ光子成像针孔准直器的解析设计方法
高能γ光子成像 针孔准直器 解析公式
2011/8/19
在对高辐射环境进行射线源分布成像时，需要为γ相机设计专门的用于高能光子成像的针孔准直器。为了简化针孔准直器的设计过程，使用几个新的解析公式来描述准直器各参数与性能间的关系。首先，采用解析方法推导了更通用的有效孔径公式、角分辨率公式和几何相对效率公式；然后，与采用蒙特卡罗方法模拟计算得到的数值进行比较。结果表明，解析方法提供的计算结果在一定范围内准确可靠。因此，本工作使用的针孔准直器...
Structural Studies of Liquid Alkaline-earth Metals -A Molecular Dynamics Approach
Molecular dynamics Pair distribution function Structure factor Binding energy
2010/6/30
In the present research article we have studied various properties like binding energy, the pair distribution function g(r), the structure factor S(q), specific heat at constant volume, and coordinati...