電子分佈 的英文怎麼說
中文拼音 [diànzifēnbù]
電子分佈
英文
electron distribution-
The positive charge in the atom is spread over the whole atomic volume.
原子中的正電荷分佈在整個原子體積上。A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time
本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算,多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序,驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較,可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率,縮短了計算時間,因此為后續計算打下了良好的基礎With the use of finite method we have developed computer simulation software for vacuum microtriodes with wedge - shaped and cone - shaped cathode on the basis of stduying deeply the field emission theory of vacuum microelectronics. the software included field section, grid point numbering, and the calculation of electric currents, transconductance and cathode capacitance, moreover, it can simulate the properties of vacuum microeletronic with variant structures and sizes. the relationship was studied and simulated among electic properties and device structures, sizes and cathode materials etc. the optimized design of vacuum microtiode was proposed
本文在深入研究真空微電子器件場致發射理論的基礎上,根據圓錐形、楔形陰極真空微電子三極體的不同特點,分別建立了物理和數學模型,在考慮空間電荷密度影響的前提下,以有限元法為基礎採用迭代的方法計算出真空微電子三極體內的電勢分佈情況,繪制出了等勢線、電子軌跡線,並得到了器件電學性能隨幾何參數的變化情況。Electron configurations in octahedral complexes
八面體構型配合物的電子分佈The numerical computing methods of the equations involving the static electric - magnetic field, electronic motion in the static electric - magnetic field, and so on are detailed. the methods of the boundary disposal are introduced. the phenomenon of secondary electron emission has also been studied
介紹了數值計算方法,包括靜電磁場的數值計算、在靜電靜磁場中電子運動軌跡的數值計算、空間電荷密度的數值計算和空間電位分佈的數值計算;介紹了邊界處理方法。In this thesis, by adopting a semiclassical model, we get an exact solution to the potential distribution in a one - dimensional finite uniform array of mesoscopic tunnel junctions. we discuss the features of two kinds of charge solitons in the array
我們採用半經典模型精確求解了一維有限長均勻介觀結鏈中的電勢分佈,討論了兩種電荷孤子的特徵。As the two charge distributions separate, leaving positive and negative sheaths.
當兩種電荷分佈開始時,就留下正離子鞘和負離子鞘。The main work of this thesis is to study of electronic structure of cathode material. some structure paramters, such as total energy, atomic net charge, atomic overlap population, of the model li5mn4o83 +, li5mn12o24 -, li7co6o2015 -, li7ni6o2015 -, li5mn2co2o83 +, li5mn2ni2o8 are calculated
論文重點研究了正極材料電子結構,通過對尖晶石型錳系材料模型li5mn4o83 +和li5mn12o24 -和層狀結構的li7co6o2015 - 、 li7ni6o2015 -模型以及摻雜模型li5mn2co2o83 + 、 li5mn2ni2o8的計算,得到了各個原子簇體系的總能量、凈電荷分佈、原子重疊布居值。The hybrid density functional theory at ab initio level was applied to study solvent effects on geometrical structures, charge distribution, and solvatochromic shifts of 4 - nitro - buta - 1, 3 - dienylamine molecule
摘要在從頭計算的水平上,利用雜化密度泛函理論研究了溶劑對4 -硝基1 , 3 -丁二烯基胺分子的幾何結構、分子內的電荷分佈和電荷轉移態的能量漂移的影響。Electrical field stress at the icicle tips is even stronger. at these areas, if the electric field across air gaps is high enough, corona discharges are initiated. this can lead to the development of local arcs across the air gaps causing a substantial increase in leakage current and a concomitant melting of ice
空氣間隙的存在使覆冰絕緣子表面的電場分佈發生了明顯畸變,間隙上承受了非常高的電壓,這使得冰凌尖端的電場變得相當強,一旦電場達到了電暈的起始電場,局部放電就在這一區域發生,進而產生局部電弧並逐漸發展成整串的閃絡,泄漏電流迅速增大,同時伴隨著冰的融化。Numerical simulation results indicate that, for low temperature dust particles, dust particles mainly exist in the area near the column center and their charge - number can be considered as a constant, while in the area where there are no dust particles, ion and electrons are in ambipolar diffusion ; for high temperature dust particles, both the distribution regions of dust particle and high ion density are expanded and dust charge - number is increasing with the distance from the center
計算結果表明:當塵埃粒子的溫度較低時,塵埃粒子主要集中在圓柱形放電器的中心很小的區域,塵埃粒子攜帶的電荷幾乎是一個常數,受塵埃粒子空間電荷的影響,離子在該區域的密度最高。在遠離中心區域,離子和電子呈現雙及擴散特點;當塵埃粒子的溫度較高時,塵埃粒子分佈的區域和高離子密度區域擴大,塵埃粒子離放電器中心越遠,攜帶的負電荷越多。And the results of calculation and numerical simulation indicate, without increasing the intrinsic collector - junction area of power devices, collector - combed structure helps to raise the intrinsic heat - dissipating area and base ' s perimeter, improve heat - dissipating method of each cell of the chip, enhance the distribution uniformity of junction temperature and current of each cell of the chip, reduce the thermal resistance and raise the dissipation power pd and output power p0, fairly well relax the contradiction among frequency, out - put power and dissipation power of the devices, and further improve the devices " property against second breakdown
而計算分析和二維數值模擬分析結果表明:梳狀集電結(基區)結構在不增加器件本徵集電結面積的條件下,增大了器件的本徵散熱面積和基區周長,改進了每個子器件單元內的散熱方式,提高了單元內結溫和電流分佈的均勻性,降低了器件的熱阻,增大了器件的耗散功率和輸出功率,較好地緩解了目前傳統結構中頻率與功率、功耗的矛盾,並有利於改善器件抗二次擊穿的性能。The design of amorphous photonic material and photonic crystal devicements we design to make a reflecting mirror of cylinder paraboloid of an antenna by using amorphous photonic materials. we calculated the transmission of the mirror and the distribution of electric field by using multiple scattering method. the result shows that it can be used as a reflecting mirror of an antenna
非晶光子材料和光子晶體器件的設計提出了用介質圓柱光子晶體作微波天線的柱拋物面反射鏡,用多重散射方法計算了反射鏡的透過譜,並模擬計算了天線的電場分佈,初步認為可以用非晶光子材料作微波天線的反射鏡。The main origin of the perpendicular magnetic anisotropy in tbco amorphous films is the static interaction between the aspheric distribution charges of non - s tb ions and the aberrant crystal field produced in sputtering and deposition process. the magnetic dipole interaction is in a secondary cause
對于tbco非晶垂直磁化膜而言,具有非球對稱電荷分佈的非s態離子tb與濺射沉積薄膜過程中產生的畸變晶格場之間的靜電相互作用構成了tbco非晶薄膜垂直磁各向異性的主要部分, tbco薄膜內的磁偶極相互作用構成了其次要部分。Influnce of au cone on distribution of forward hot electrons
金錐對靶背向超熱電子分佈的影響From this expression we know that, once the electron distribution is given, we can get the exact potential distribution in all islands
由這個表達式我們知道,只要給定了結鏈中的電子數分佈,就可以準確得到各島的電勢分佈。We find that a gate voltage on a gate capacitor will excite a potential distribution similar to that of a single charge soliton. we call it a static potential soliton. what " s important is that the profile of such a soliton can be changed proportionally and continuously
我們發現給一個門電容加上門電壓將會在結鏈中激發一個類似於單電荷孤子的電勢分佈,並將其稱為靜電勢孤子,只是這種孤子的輪廓可以成任意比例地連續變化。Analyze the linear dipole array with uniform element spacing using the method of moments ( mom ), derive the analytical expression for the recovered signal with the direct data domain method, demonstrate the effect of the mutual coupling on the performance of the antenna array by examples, the degradation of the system caused by the mutual coupling is simulated and analyzed in two different electromagnetic environments such as the weak and strong interference
用矩量法計算了幾個信號同時照射時對稱陣子均勻直線陣的電流分佈,用直接數據域演算法推導了此接收陣列的恢復期望信號的表達式,舉例說明了互耦對陣列天線性能的影響,數值模擬了在弱干擾和強干擾下,互耦造成系統性能下降的情況並分析了原因。The factors which influenced the process include the insulator ' s material, structure, the distribution of space electrical field, the way to deal with the surface, the characteristic of voltage waveform, pulse width etc. there are two kinds of theory for the vacuum surface flashover : secondary electron emission avalanche ( seea ) and electron triggered polarization relaxation ( etpr )
影響該過程的因素包括絕緣材料結構、空間電場分佈、表面處理方法、所加電壓特徵,脈沖寬度等。研究真空表面閃絡過程有兩類理論:二次電子發射崩潰( seea )和電子引發極化鬆弛( etpr ) 。The proper atomic clustcr model is developed in the papel according to calculating results of quantuin chemiwt and the theory of sanderson electro - negativity the law of electron distribuing in brass material and the electto - negativity of brass - zinc are established
為進一步研究反應機理,本文採用適當的原子簇模型,通過量子化學計算及sanderson電負性分析對黃銅中的電子分佈規律及銅鋅電負性進行了探討。分享友人