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thermalization
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  热化
     The inter-valley scattering and thermalization time are 1.1ps and 94fs respectively.
     我们得到了谷间散射和载流子热化的驰豫时间为1.1ps和94fs。
短句来源
     A NEW NEUTRON NOISE TECHNIQUE FOR FAST REACTORS--THERMALIZATION MEASUREMENT TECHNIQUE FOR THE NEUTRON NOISE OF FAST REACTORS
     一种新的快堆中子噪声技术——快堆中子噪声的热化测量技术
短句来源
     Achieving Double Benefit of Steam Saving and Electric Power Increasing with the Theory of Thermalization
     应用热化理论,实现节汽、增电双重效益
短句来源
     In our knowledge, the inter-valley and thermalization relaxation time constant of ZnSe pumped at 800nm is first measured.
     在我们所知范围内,这是首次得到ZnSe在800nm双光子激发下的谷间驰豫和热化过程驰豫时间。
短句来源
     For the energetic charged particles produced in D He 3 fusion reactions,the calculation accuracy of energy loss rate or slowing down time makes a direct impact on the energy balance and fast ion pressure during the initial phase of thermalization processes in background plasma.
     对D He3 聚变产生的高能带电粒子 ,它们在本底等离子体中热化初始阶段的能量损失速率或慢化时间的计算准确性直接影响到能量平衡和快离子压强的计算结果。
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  热能化
     This work demonstrates that,in a pure metal vapor,the thermalization of velocity-selected excited-atom distribution by the mechanism of resonance exchange can be three orders of magnitude greater than that from velocity-changing collisions.
     证明了在纯碱金属蒸气中,由共振交换机制产生的热能化效应的大小比由速度改变碰撞引起的大3个数量级。
短句来源
  “thermalization”译为未确定词的双语例句
     The initial dynamics of photogenerated carriers in a-Si:H/a-SiN_x:H multilayers has been investigated with time-resolved laser spectroscopy. The mechanisms of thermalization and recombination of these carriers are analysed.
     用时间分辨激光光谱学方法研究了a-Si:H/a-SiN_x:H多层膜光生载流子初始动力学过程,分析了非平衡载流子的热释和复合机制。
短句来源
     Energies of the sputtered atoms reaching the substrate are mainly around several eV, with a peak in the very low energy that results from the collision and thermalization;
     溅射原子到达衬底后的能量主要集中在几个电子伏特的范围内,且在能量很低的区域也有分布峰,这主要是由于碰撞使一些原子能量降低、达到了背景气体温度;
短句来源
     Below 90 K,the activation energy is about 4~5 meV,whereas the activation energy is about 25~55 meV above 90 K. It is believed that the low temperature PL behaviour is likely to be controlled by non-radiative transition accompanied by carrier thermalization caused by spatial fluctuations of the band edges.
     温度小于 90K ,激活能为 4~ 5meV ,温度大于 90K ,激活能为 2 5~ 55meV。
短句来源
     There exists an exclusive point of thermalization temperature(390℃) and platinum loading((6μg)) where platinum electro-catalyst defined as nanosized platinum particles with small dimensions(about 8nm) and the high kinetic performance was achieved,and the chemical stability of nanosized platinum electrodes was excellent.
     当热分解温度为390℃,载铂量为6μg/cm2时,制备的铂催化剂在电极表面呈粒径为8nm左右的纳米粒子状态,电极的催化活性最高,而且表现出较好的化学稳定性.
短句来源
     The proportion between the thermalization process and diffusion process possess in all the decay process is determined by photon energy of excitation.
     载流子的热弛豫过程与扩散过程在整个衰减过程中所占的比例,取决于激发光子的能量。
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  thermalization
The influence of water on the rate of formation of labeled products and its role in thermalization of "hot" tritium atoms in the target is discussed.
      
Most of the emission lines in the spectra of these objects are formed under conditions close to thermalization, enabling modeling of their pro files in an LTE approximation.
      
The thermalization mechanism is attributable to the interaction between the electric quadrupole moment of the ion and the helium lattice.
      
It is shown that because a gap is present in the excitation spectrum of He-II the thermalization time of muons and secondary electrons increases with decreasing temperature.
      
Thermalization of neutrons on cold atoms in magnetic traps
      
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We have studied the h.rr.ineEcerce kir.ttics cf bcurd exciters in nitrowen doped Ⅲ-Ⅴ binary or trinary compounds, considering various radiative and nonradiative processes.Ⅲ - Ⅴ compounds are excited by the light of above-gap energy. The free exciton is first created,then trapped by N impurities,ard after that the bound exciton can be either annihilated radiatively ard nonradiatively cr dissociated, as a result of thermalization, from the impurity to become a free exciton. A part of these free excitons...

We have studied the h.rr.ineEcerce kir.ttics cf bcurd exciters in nitrowen doped Ⅲ-Ⅴ binary or trinary compounds, considering various radiative and nonradiative processes.Ⅲ - Ⅴ compounds are excited by the light of above-gap energy. The free exciton is first created,then trapped by N impurities,ard after that the bound exciton can be either annihilated radiatively ard nonradiatively cr dissociated, as a result of thermalization, from the impurity to become a free exciton. A part of these free excitons will be trapped again by other centers ard the excitation energy is transferee to the other eeriers. The clrei rart cf them will be directly annihilated through radiative cr ncriadiative transitions.In GaP:N,at lew temperature cf EK,the probability cf ncnrediative internal transition of bound exciton is found to be negligible. It is well kncwn that the N trapped exciton in Ⅲ - Ⅴ compounds has two substates A and B (J=1,2).Tht lifetime of exciton B(exciton in substate B) is much longer than that of excition A (exciton in substate A). It is likely that the excitation energy of bourd excitcn can fce trarsfeied 1c ether certen \\her it is in the substate B (J = 2) owing to its longer lifetime.Therefore,the efficiency cf luminescence due to excitcn B is lower than that cf excitcn A. As tempeiature is increased, the population cf excitons in substates A and B varies ard this variation will result in a change of total intensity of emission due to tound excitons. We have experimentally observed such a kind of temperature dependence of emission intensity of bound excitons. In order to stduy the luminescence kinetics, we define that:(1) a is the ratio of radiative transition probability of exciton B to that of exciton A, and(2) (3 is the ratio of the probability of nonradiative energy transfer of excitons A or B to that of radiative transition of exieiton A.On solving the rate equation, we have derived the following formula which describes very well the temperature dependence of total emission intensity of bound excitonwhere, Ea0 and Ea are the activation energies of thermal quenching for freeor bound excitons respect ively.AE, is the energy splitting between two substa-tes A and B. A,B and C are parameters and C is nitrogen concentration dependent. The terms 3e and 5α in the numerator show the contribution to the total emission intensity of excitons A and B, respectively. On the other hand, the competition between radiative transition, nonradiative energy transfer and thermal quenching are represented by 1, β, Ae~Ea/KT for exciton A and α,β, Ae-Ea/KT for exciton B. We have found that the value of β is of the order of magnitude of 10%.Two extreme cases are discussed.( 1 ) C>>A. In this case, the probability of the recapture of free exciton by imparity N is small. Hence, we havewhen the concentration of nitrogen is low, the condition of C>>A will be satisfied. We have experimentally found that in weakly doped GaP, the activation energy of thermal quenching is really equal to Eao+Ea rather than Eao ( 2 ) C<

用发光动力学的分析方法,研究了Ⅲ—Ⅴ族化合物中N束缚激子的发光强度与温度的关系,得到的理论公式与实验结果符合得较好。我们的分析指出,由于无辐射能量传递的存在,束缚激子的△J=2跃迁的发光效率低于△J=1跃迁的发光效率,致使低温(T<50K)下束缚激子的发光强度可能随温度的下降而变弱。另外,N杂质对自由激子再俘获的可能性的大小直接影响束缚激子发光的热猝灭过程:束缚激子可能因热离解成自由激子或自由的电子和空穴。我们找到了区分这两类情况的条件。

Electrostatic ion cyclotron wave (EIC)can induce anormalous resistivity and parallel electric field. In this paper, evolution of distributions of electrons is analyzed.The results show that the distribution can be divided in two groups-trapped part andrun-away part. Two-stream instability can flatten the distribution of the run-away electrons, resulting in a distribution with a long and flat tail. Such kind of distribution is instable to anormalous cyclotron resonance is certain velocity space, resulting in...

Electrostatic ion cyclotron wave (EIC)can induce anormalous resistivity and parallel electric field. In this paper, evolution of distributions of electrons is analyzed.The results show that the distribution can be divided in two groups-trapped part andrun-away part. Two-stream instability can flatten the distribution of the run-away electrons, resulting in a distribution with a long and flat tail. Such kind of distribution is instable to anormalous cyclotron resonance is certain velocity space, resulting in thermalization and pitch-angle scattering of the electrons, therefore the losses of parallel velocity of the electrons. As a result of development of such instability, a bump-on-tail distribution can be established, and a new instability develops and results in flattenning of the bump-on-tail. This instability can ramp the parallel velocity around a critical value. After that, although small part of electrons can be accelerated further, but very slowly, at same time be thermalized.Finally, the results of this paper are compared with the observation results of the wave fields and precipitating electrons, and general consistency is showed.

静电离子迴旋波可以导致异常电阻及平行电场的出现.本文分析了电子分布函数在这种波场及平行电场中的演化.结果表明,电子分布可分成捕获和逃逸两部分.双流不稳定性的发展使逃逸部分变平,形成具有长而平的尾巴的分布函数.后者在一定速度空间范围内对异常迴旋共振是不稳定的,结果导致电子的热化和投掷角扩散,使电子损失掉平行方向的能量,形成尾部隆起的分布特征,导致新的不稳定性的出现,使隆起的部分基本拉平.此后虽然有少部分电子仍可能被加速,但要慢得多,且边加速边被热化.

This paper gives a new neutron noise technique for fast reactors, which is known as thermalization measurement technique of the neutron noise of fast reactors. The theoretical formulas of the technique were developed, and a digital delayed coincidence time analyzer consisted of TTL integrated circuits was constructed to study this technique. The technique has tested and applied practically at DF-VI fast zero power reactor. It was showed that the provided technique in this work has a number of significant...

This paper gives a new neutron noise technique for fast reactors, which is known as thermalization measurement technique of the neutron noise of fast reactors. The theoretical formulas of the technique were developed, and a digital delayed coincidence time analyzer consisted of TTL integrated circuits was constructed to study this technique. The technique has tested and applied practically at DF-VI fast zero power reactor. It was showed that the provided technique in this work has a number of significant advantages in comparison with the neutron noise methods published, before.

本文提出了一种新的快堆中子噪声技术,称为快堆中子噪声的热化测量技术。导出了这一技术的理论关系式。设计研制了一台适合于这种测量技术的集成组件数字延迟符合时间分析装置,建立了一个小型时域分析系统。在DF-VI快中子零功率堆上验证并实际应用了这一技术,证明该技术具有一些现有中子噪声方法所不具有的突出优点。

 
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