搜索结果: 136-150 共查到“理学 atom”相关记录150条 . 查询时间(0.02 秒)
March 1, 2007，As if building a computer out of rubidium atoms and laser beams weren’t difficult enough, scientists sometimes have to work as if blindfolded: The quirks of quantum physics can cause cor...
Studies on the Preparation of a,w -Telechelic Polymers by the Combination of Reverse Atom Transfer Radical Polymerization and Atom Transfer Radical Coupling Processes
Reverse atom transfer radical polymerization (RATRP) atom transfer radical coupling (ATRC) azo-initiator telechelics
2010/4/19
Monofunctional polystyrenes with cyano, carboxylic acid, and hydroxyl terminal groups were synthesized by reverse atom transfer radical polymerization (RATRP) using corresponding azo initiators in con...
Self-Diffusion Coefficients in Liquid Ag Using the Embedded Atom Model Based Effective Pair Potentials
Dynamic Properties Self-diffusion
2010/4/9
We present the dynamical properties of liquid Ag at different temperatures, using the Mishin and Doyoma-Kagure version of the Embedded Atom Model (EAM) potentials. They have been evaluated within the ...
A Molecular Dynamics Study of the Static Structure, Thermodynamic and Transport Properties of Liquid Iron Using the Modified Analytic Embedded Atom Method
liquid iron modified analytic embedded atom method molecular dynamics
2010/4/9
Using the modified analytic embedded atom method (MAEAM), we have carried out molecular dynamics (MD) simulation to compute structure,thermodynamic and transport properties of liquid iron. The Foiles ...
Quantum Atom Optics with Trapped Bose-Einstein Condensates
Quantum Atom Optics Trapped Bose-Einstein Condensates
2010/10/26
Both Bose-Einstein condensates and optical fields are composed of bosons, so that the majority of the processes which have long been studied in quantum and nonlinear optics have equivalents in the fie...
All-Atom Protein-Folding Simulations in Generalized-Ensembles
All-Atom Protein-Folding Simulations Generalized-Ensembles
2010/10/19
We review the generalized-ensemble approach to protein studies. Focusing on the problem of secondary structure formation, we show that these sophisticated techniques allow efficient simulations of all...
Excitation Plus Ionization in Electron-Atom Collisions to He+ (n=2): (e,2e), (e, eg ) and (e, 2eg ) Studies
Ionization-Excitation Helium Electron Triple Coincidence Correlation
2010/4/14
Simultaneous excitation-ionization of helium atoms by electron impact is observed by the coincidence detection of the outgoing particles. The relationship between (e,2e), (e,eg ) and (e,2eg ) experime...
Sensitivity to measurement perturbation of single atom dynamics in cavity QED
Sensitivity measurement perturbation single atom dynamics cavity QED
2010/10/15
We consider continuous observation of the nonlinear dynamics of single atom trapped in an optical cavity by a standing wave with intensity modulation.The motion of the atom changes the phase of the fi...
We obtained the coherent states for the hydrogen atom by transforming the problem onto the four oscillators in the parametric time at the classical level and quantizing these oscillators. We showed th...
Effects of Dicke superradiance in context of the one-atom maser
Effects of Dicke superradiance context one-atom maser
2010/10/13
We consider a micromaser model to study the influence of Dicke superradiance in the
context of the one-atom maser. The model involves a microwave cavity into which twolevel
Rydberg atoms are pumped ...
The master equation for a two-level atom interacting with a strong coherent field and damped into a reservoir formed by a finite bandwidth squeezed vacuum is derived. The master equation extends the Y...
All-atom ab initio energy minimization of the kaolinite crystal structure
All-atom ab initio energy minimization kaolinite crystal structure
2012/4/5
Calculationsthatminimizetheenergyandoptimizethegeometryofallatomiccoor-
dinatesfortwoproposedkaolinitecrystalstructureswereperformedusinga?rst-princi-
ples,quantumchemicalcodebasedonlocaldensityfunc...
Estimation of Heavy Atom Content and Distribution in Chlorite Using Corrected X-Ray Powder Diffraction Intensities
Chlorite Heavy atoms Intensity measurements Sample preparation X-ray powder diffraction
2012/1/9
The heavy atom content and distribution in chlorite were estimated using the relative intensities of basal X-ray powder diffraction (XRD) peaks. For these peaks to be meaningful, however, corrections ...
Atom Positions in Highly Ordered Kaolinite
Crystal structure Dickite Hydrogen atom Hydroxyl orientation Kaolinite Rietveld method
2012/2/7
The crystal structure of kaolinite (P1, a = 5.153 (1), b = 8.941 (1), c = 7.403 (1) 侌, 兛 = 91.692(3)亱, 兝 = 104.860(3)亱, 兞 = 89.822(3)亱, specimens from Keokuk geodes) has been refined in detail and tha...
Hydrogen Atom Positions in Kaolinite by Neutron Profile Refinement
Crystal structure Hydrogen Kaolinite Neutron profile refinement O-H vector Rietveld method
2012/2/7
A structure refinement of kaolinite made using the Rietveld neutron profile refinement technique has given non-hydrogen atom positions which were not significantly different from those given by B. B. ...