搜索结果: 16-30 共查到“知识库 原子与分子理论”相关记录62条 . 查询时间(4.186 秒)
Pseudospectral Calculation of Helium Wave Functions, Expectation Values, and Oscillator Strength
Pseudospectral Calculation Helium Wave Function Expectation Values Oscillator Strength
2011/8/4
Pseudospectral Calculation of Helium Wave Functions, Expectation Values, and Oscillator Strength.
Diamagnetic correction to the $\bm{^9}$Be$\bm{^+}$ ground-state hyperfine constant
Diamagnetic ground-state hyperfine
2011/9/7
We report an experimental determination of the diamagnetic correction to the 9Be+ ground state hyperfine constant A. We measured A = −625 008 837.371(11) Hz at a magnetic field B of 4.4609 T.Com...
H和B原子在有序态 Ni3Fe 表面的吸附
Ni-3Fe 环境氢脆 硼
2013/12/4
采用基于密度泛函理论(density functional theory, DFT)的第一性原理方法，对H和B原子在有序态 Ni3Fe 合金(111)表面的吸附进行研究.结果表明，B原子在有序态 Ni3Fe 合金(111)表面的吸附能远低于H原子，从而更容易被有序态 Ni3Fe 合金(111)表面吸附，形成稳定结构.这导致H原子在有序态Ni-3Fe合金表面的吸附机会大大减少，降低了有序态 Ni3F...
维生素C对菲醌三重激发态的淬灭机理及动力学研究
菲醌 维生素C 时间分辨电子自旋共振 反胶束
2012/1/5
用时间分辨电子自旋共振技术研究了乙二醇(EG)均相溶液和反胶束溶液中抗氧化剂维生素C(VC)对菲醌(PAQ)分子激发三重态3PAQ*的淬灭反应．利用反胶束模拟生物细胞和组织的生理环境．光解PAQ/EG-H2O均相溶液，3PAQ*与溶剂分子EG之间发生氢转移反应．当体系中加入VC后，3PAQ*不仅从EG上夺氢，还从VC上夺氢，VC对3PAQ*的淬灭速率常数为1.409×108 L/(mol·s)， ...
基于双自旋轨道耦合系数模型并结合完全能量矩阵的方法，研究了AMF3(A=K, Rb; M=Zn, Cd, Ca):Ni2+和K2ZnF4:Ni2+体系中Ni2+的基态分裂和局域结构． 通过模拟光谱和电子顺磁共振(EPR)谱，结果显示在研究氟化物络合分子的能级精细结构和局域结构畸变时，配体F-对体系的自旋轨道耦合机理的影响不可忽略，同时讨论了EPR参量随夹角、自选轨道耦合、平均参量以及偏离参量的变化...
Decoherence in a Double-Dot Aharonov-Bohm Interferometer
Decoherence Double-Dot Aharonov-Bohm Interferometer
2010/11/23
Coherence in electronic interferometers is typically believed to be restored fully in the limit of small voltages, frequencies and temperatures. However, it is crucial to check this essentially pertur...
快速匹配追踪三参数时频特征滤波
匹配追踪 互相关阈值 多原子提取 时频特征滤波
2013/11/13
传统的匹配追踪方法通常采用完备的时频原子库和贪婪算法进行子波分解，计算量巨大。为此本文引入互相关阈值约束技术，实现两次迭代和完备库之间的反馈，剔除那些互相关值很小的时频原子，动态地减小完备库的冗余度；通过多原子同步提取，实现快速匹配追踪地震道分解。分解后的地震信号是按子波的能量排序的，每个子波都由振幅、频率和中心时间三参数表示，代表原始地震信号在某一中心时间的局部主振幅特征和主频率特征，因此在信号...
Higgs boson mass bounds in the presence of a very heavy fourth quark generation
Higgs boson mass bounds fourth quark generation
2011/1/13
We study the effect of a potential fourth quark generation on the upper and lower Higgs boson
mass bounds. This investigation is based on the numerical evaluation of a chirally invariant lattice Higg...
Novel charmonium-like structures in the $J/\psi\phi$ and $J/\psi\omega$ invariant mass spectra
Novel charmonium-like structures $J/\psi\phi$ and $J/\psi\omega$ invariant mass spectra
2011/1/5
Stimulated by the new evidence of Y(4274) observed in the J/ invariant mass spectrum, we first propose the charmonium-like state Y(4274) as the S-wave Ds ¯D s0(2317) + h.c. molecular state with...
Magnetic nanoparticles with bulk-like properties
Magnetic nanoparticles bulk-like properties
2010/11/22
The magnetic behavior of Fe3−xO4 nanoparticles synthesized either by high-temperature decomposition of an organic iron precursor or low-temperature co-precipitation in aqueous conditions, is com...
Large-N reduction of SU(N) Yang-Mills theory with massive adjoint overlap fermions
1/N Expansion Eguchi-Kawai reduction Adjoint fermions
2011/1/13
We study four dimensional large-N SU(N) Yang-Mills theory coupled to adjoint overlap fermions on a single site lattice. Lattice simulations along with perturbation theory show that the bare quark mass...
Perturbative improvement of SU(2) gauge theory with two Wilson fermions in the adjoint representation
Perturbative improvement of SU(2) gauge theory two Wilson fermions adjoint representation
2011/1/13
We present a perturbative calculation of the improvement coefficients of SU(2) gauge theory
with adjoint representation Wilson-clover fermions and using Schrödinger functional boundary
conditio...
Non-perturbatively improved clover action for SU(2) gauge + fundamental and adjoint representation fermions
Non-perturbatively improved clover action fundamental adjoint representation fermions
2011/1/13
The research of strongly coupled beyond-the-standard-model theories has generated significant
interest in non-abelian gauge field theories with different number of fermions in different representatio...
Scaling study for 2 HEX smeared fermions: hadron and quark masses
Scaling study 2 HEX smeared fermions: hadron quark masses
2011/1/13
The goal of this study is to investigate the scaling behaviour of our 2 HEX action. For this purpose,we compute the Nf = 3 spectrum and compare the results to our 6 EXP action. We find a large scaling...
Realistic Time-Reversal Invariant Topological Insulators With Neutral Atoms
Realistic Time-Reversal Invariant Topological Neutral Atoms
2010/11/23
We lay out an experiment to realize time-reversal invariant topological insulators in alkali atomic gases. We introduce an original method to synthesize a gauge field in the near-field of an atom-chip...