量子勢阱 的英文怎麼說

中文拼音 [liángzishìjǐng]
量子勢阱 英文
quantum well
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 勢 : 名詞1 （勢力） power; force; influence 2 （一切事物力量表現出來的趨向） momentum; tendency 3 （自...
  • 阱 : 名詞（捕野獸用的陷坑） trap; pitfall; pit
  • 量子 : quantum; gion
  1. If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g

    如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。
  2. Through the input parameters modification, we got the micro process image of latent image formation, which indicate the variation of the number of different particles with time and the transformation relationships between them ; also, we got the dependence of photosensitive process on these parameters. on this condition, all kinds of reactions occurred during the process of a certain carrier are very clear from the analysis of the results

    通過對模擬程序中輸入參數的調整，我們得到了不同勢阱密度下潛影形成過程的微觀圖像，揭示了各種粒子數量隨時間的變化關系以及它們之間的相互轉化關系，同時還得到了每一種粒子在感光過程中的反應過程以及它們對整個感光過程的影響。
  3. Quantum tunneling of bose - einstein condensates in optical lattices

    愛因斯坦凝聚體在光勢阱中的量子隧穿
  4. Considering that r limit to a small area we adopt lattice model. in the model, cell center form space lattice. quantum state of center of mass of molecule is corresponding to the particle in potential trap. secondly, hamiltonian operator is taken into account

    再考慮到r |局限在空間一個小區域內，可採用格胞模型，格胞中心構成空間點陣，分子質心r |的量子態相當于諧振子勢阱中的質點。
  5. Gaas / algaas quantum well photodetectors ( qwips ) are new type devices and progressed rapidly in recent 20 years. qwips utilizing intersubband absorption between gallium arsenide ( gaas ) well and aluminum gallium arsenide ( alxga1 _ xas ) barriers were perfected. therefore, the ability to accurately control the band structure and hence the spectral response, as well as both established technology for growing and processing gaas optical devices and commercially available large area vlsi gaas ic ' s, makes gaas / algaas qwips attractive devices for use in very large focal plane arrays ( fpas ), especially available in the range of long wavelength 8 - 12 urn

    Gaas algaas量子阱紅外探測器（ qwips ）是近二十年來迅速發展起來的一種新型紅外探測器，它成功地利用了gaas勢阱和al _ xga _ （ 1 - x ） as勢壘之間的子帶間吸收，使之具有能帶結構可精確設計從而獲得指定光譜響應的特點，加之成熟的材料生長技術、器件工藝，以及商業上可獲得大面積的vlsigaas集成電路，使得gaas algaasqwips尤其適宜製作8 12 m長波范圍的大面陣探測器。
  6. It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained

    文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。
  7. However, it becomes independent on channel depth in strong inversion region, which is in accordance with numerical analysis

    結果進一步顯示，只考慮方形勢阱的量子力學結果，略高估計了閾電壓，且低估了電子密度。
  8. The factors affecting the in - plane thermal conductivity of thin films discussed include the mass of particles, the well depth, and the lattice constant, etc

    從粒子質量、勢阱深度、晶格常數的變化等方面討論了其對薄膜兩種材料的切向導熱系數的影響。
  9. The effect of an applied electric field on the binding energy of shallow donor impurities in rectangular cross section gaas qwws was presented by montes et al, by considering an infinite confinement potential and using a variational scheme

    外加電場對矩形量子阱線中淺施主雜質束縛能的效應是由montes等人提出的，他們採用變分法討論了無限深勢阱的量子線結構。
  10. The performance of modulators employing mqw is governed by the quantum confined stark effect. in order to simplify the analysis of mqw, we obtain an explicit formula concerning the correlations between the gaas / gaalas quantum well widths of finite potential barrier structure and those of infinite potential barrier structure under the condition that the ground state energies are equal at zero bias states. then the transfer matrix method is used to investigate the optical field distribution in the mqw waveguide based on five - step asymmetric coupled quantum well structure that is really used in the modulator

    本論文首先根據量子限制stark效應，發展了等效寬度思想，提出了把單量子阱結構的有限深勢阱的分析轉化為無限深勢阱模型的顯式公式，從而大大簡化了電場下量子阱結構的分析；接著利用轉移矩陣，把周期性的量子阱結構簡化為三層結構，得到了實際採用的非對稱三阱結構量子阱的場分佈，並討論了量子阱結構的偏振特性。
  11. From the exact expression of the field, we obtain a multipole polynomial expansion, and under the paraxial condition we furthermore obtain the approximate expression. the loffe trap, consisting of two coils with parallel currents and four straight conductors with currents in alternating directions, is one of the most important traps. we specially study the field structure of it by using both the exact expression and a multipole polynomial expansion that facilitates studies of classical or quantum orbits. if the region near the origin is of interest, we may obtain a simple expression of the field and this configuration may be called idealized loffe trap

    若只討論阱中的近原點區域時，阱中的磁場可以呈現出一種簡潔的形式，人們把它稱為理想ioffe阱。磁矩反平行於磁場的中性粒子在阱中與磁場發生相互作用，藉助相互作用勢，可以獲得粒子在阱中的經典運動方程。在一定的近似條件下，我們可以採用逐次近似的方法，使方程簡化，其中三個分量式中關于z的方程比較容易求解，而關于x 、 y的方程則演化為我們熟悉的馬丟方程的形式。
  12. ( 3 ) the electric field breaks the energy degeneracy for symmetrical impurity position in the well, the results show that the redshift and blueshift of the impurity stark energy shift as the impurity position. ( 4 ) under the same external electric field, the impurity stark energy shift is obviously different with the different aspect ratio of the quantum well wires

    （ 3 ）當施主離子位於勢阱中不同位置時，零電場下量子阱線中的雜質態是關于施主離子位置中心對稱的簡並態，在外加電場作用下發生能級分裂，這種簡並不再存在;雜質的stark能移由於施主離子位置的不同表現為紅移或藍移。
  13. Abstract : we conduct a theoretical study on the properties of a bound polaron in a quantum well under an electric field using linear combination operator and unitary transformation methods, which are valid in the whole range of electron - lo phonon coupling. the changing relations between the ground - state energy of the bound polaron in the quantum well and the coulomb bound potential, the electric field strength, and the well width are derived. the numerical results show that the ground - state energy increases with the increase of the electric field strength and the coulomb bound potential and decreases as the well width increases

    文摘:採用線性組合算符及幺正變換方法研究了電場對量子阱弱耦合束縛極化子的性質的影響.推導出量子阱中束縛極化子的基態能量和庫侖束縛勢、電場和阱寬的變化關系.數值計算結果表明，基態能量因電場和庫侖束縛勢的不同而不同，隨電場和庫侖束縛勢的增大而增大，隨阱寬的增大而迅速減小
  14. The orientation state of the molecule can be described by angular momentum eigenstate of the molecule rotating around its long axis ; the state of the molecule center - of - mass can be described by energy eigenstate of the particle in the harmonic well potential

    ）和分子質心位矢（ ? ） 。分子取向態可用分子繞長軸自轉角動量本徵態描述；分子質心態可用質點在諧振子勢阱中的能量本徵態來描述。
  15. Then through the optimization of the code, we can get the dependence of free electron ' s lifetime and the number of recombination events on the density and depth of traps

    通過對所得數據的分析，我們得到了光電子壽命以及復合事件的數量和速率對勢阱密度和深度的依賴關系。
  16. In the second chapter, on the basis of the work of smerzi et al, we discuss the 7r - phase oscillations and the macroscopic quantum self - trapping effects under the symmetric time - independent well

    基於smerzi等人的工作，在第二章主要討論了對稱不含時勢阱情況下系統的位相振蕩和宏觀量子自囚。
  17. The purpose of this paper is to calculate the distribution of d - centers " bound states along with the variation of the width of the quantum well. we want to understand the confine effect through our calculation that the system received from the quantum well

    我們在本文里研究的是方形量子阱里的d ~ -中心，計算了在量子阱中d ~ -中心的束縛態隨著阱寬的分佈，以期了解量子阱的勢壘對磁場里d ~ -中心的限製作用。
  18. The results of numerical calculation show that the ground - state energy changes with the coulomb bound potential, magnetic field and the well - width, which will increase with increasing magnetic field and decrease with increasing the coulomb bound potential and the well - width

    通過數值計算結果表明：量子阱中束縛極化子的基態能量因振動頻率、庫侖束縛勢、磁場和阱寬的不同而不同，它隨振動頻率和磁場的增加而增大，隨庫侖束縛勢和阱寬的增大而減小。
  19. In the effective mass approximation, using the two - dimensional equivalent potential model and a simple two - parameter wave function, we calculate variationally the ground state binding energy and correlation energy of positively and negatively charged excitons in finite deep gaas - al0. 33ga0. 67as quantum wells. the results show fair agreement with the previous experimental results

    在有效質量近似下，我們採用二維等效勢模型，並且選取了數學形式簡單、物理意義明確的兩參數變分波函數，利用變分法數值計算了有限深gaas ? al _ （ 0 . 33 ） ga _ （ 0 . 67 ） as量子阱中帶電激子的基態束縛能及相關能，所得結果與實驗結果符合得很好。
  20. The changing relations between the ground - state energy of the bound polaron in the quantum well and the coulomb bound potential, the electric field strength, and the well width are derived

    推導出量子阱中束縛極化子的基態能量和庫侖束縛勢、電場和阱寬的變化關系。
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