The electron free flying time is determined by the electron -neutral particle collision frequency.
电子的自由飞行步长由电子与中性粒子的碰撞频率来决定。
The energy of light varies across the spectrum (blue light is more energetic than red) but only a certain amount of energy is needed to knock an electron free.
光谱中光的能量是不同的(蓝光比红光更具能量)，但是只需一种确定的能量来碰触电子使其脱离。
But we see if we have a free electron, as we do in this dotted line here, that's going to be a higher energy that's less stable.
但是我们看到如果，我们有一个自由电子，就像虚线所示那样，那将会是一个较高的，不够稳定的能量。
This represents the free electron.
这就是自由电子。
And so the energy is zero because the electron is no longer bound. It is free.
所以这个系统能量为0，因为，电子不再受束缚了，它自由了。
Evidence suggests that pumping in too much oxygen too quickly can strip the molecule of a single electron, creating a free radical.
证据显示，太快地吸入过多的氧气可能夺走单电子的分子，形成自由基。
Free radicals produced by many biochemical processes or toxic substances, such as chemicals, pesticides, heavy metals etc, are unstable molecules that have an electron missing.
阿自由基产生的许多生化过程或有毒物质，如化学品，农药，重金属等，都是不稳定的分子，有一个电子失踪。
A free radical is a molecular fragment having an unpaired electron.
自由基是一种具有未配对电子的分子碎体。
The free electron gas is a kind of representative quantum Fermi gas.
金属的自由电子气是一种典型的量子费米气体。
In the high efficiency and small signal region, we investigate theoretically the efficiency enhancement mechanism of far infrared free electron laser (FIR-FEL) with a reverse tapering waveguide.
在高效率和低电流小信号范围内，理论地分析了用反向渐变波导提高远红外波导自由电子激光器(FIR - FEL)效率的机理。
In the conductor or some solutions, the true migration is the belt electric charge granule, like free electron, ion.
在导体或一些溶液中，真正移动的是带电荷的粒子，如自由电子、离子。
A method for direct measuring the frequency of a free electron laser using AC Josephson effect is presented.
提出一种利用交流约瑟夫森效应直接测量自由电子激光频率的方法。
According to this principle, a miniature, inexpensive and effective free electron laser at high frequency may be designed. It is feasible in technology.
据此原理，可以设计小型、廉价、高效率、高频率自由电子激光器，它在技术上是可能实现的。
Presented in this paper are the results of experimental study on the magnetic-field-immersed foilless diode of a Raman free electron laser.
文章给出了用于一台喇曼自由电子激光器磁场浸没型无箔二极管工作特性的实验研究。
The free electron laser with a linearly polarized wiggler and axial guide field hag been studied.
本文研究的自由电子激光器具有线性摆动器及轴向引导磁场。
Influence of untrapped electrons on the sideband instability of electromagnetic Wig-gler free electron laser(EM-FEL)is analyzed in detail with single-particle theory.
用单粒子理论分析了未被有质动力势阱捕获的电子对电磁波泵自由电子激光边带不稳定性的影响。
The wave function of free electron in a strong laser plasma is obtained by solving exactly the Dirac equation in a curved space-time with optical metric for the laser plasma.
借助激光等离子体的光学度规，严格求解了弯曲时空中的狄喇克方程，得到了强激光等离子体中的自由电子波函数。
The rules of electron subband energies and corresponding wave functions depending upon free carrier concentration have been obtained.
得到了电子亚带能量和波函数随自由载流子浓度的变化规律。
When the laser field is diminshed to zero, the wave function is naturally reduced to relativistic wave function of free electron.
当激光场为零时，该波函数自然地过渡到相对论的自由电子波函数。
A free electron laser with electromagnetic pumping wave is studied.
本文研究了电磁波泵浦的自由电子激光器。
The classical behavior of a free electron in a strong laser plasma is discussed by solving the generally-covariant equation of motion for an electron.
通过严格求解广义协变的电子运动方程，讨论了强激光等离子体中自由电子的经典行为。
A design of an over-all experiment of Raman free electron laser with an optical klystron configuration is put forward.
本文提出光学速调管结构喇曼自由电子激光器总体实验设计。
The three-magnet bending system is suitable for linac beam deflection of free-electron-laser facility.
这种结构紧凑的三磁铁偏转系统适用于自由电子激光器的束流传输。
This paper deals with the statistical properties about two dimensional photon gas and free electron gas.
讨论了二维光子气体和自由电子气体的统计性质。
The gain and efficiency improvement of free electron laser by an optical klystron configuration has been studied by one dimensional single-particle model.
采用一维单粒子模型对光学速调管结构目由电子激光器增益和效率的提高进行了研究。
A new principle for free electron lasers is proposed for the first time by using very strong surface periodic potential caused by the spontaneous polarization of ferroelectric single crystals.
本文利用铁电晶体自发极化产生的强大周期性表面势，首次提出新的自由电子激光原理。
The operation of a free electron laser can be explained without reference to quantum mechanics.
自由电子激光器的操作完全可以被解释清楚而无需求助于量子力学。
This paper, based on the Fermi gas model, studies the energy of free electron gas in metal, discusses the highest energy, the average energy and the energy level density of free electrongas.
本文根据费米气体模型理论，研究金属中自由电子气的能量，讨论电子的最高能量、平均能量和电子气的能级密度。
The stationary pulse solutions for a free electron laser are obtained by using the classical theory.
本文用自由电子激光器经典理论的数值解法，给出一组稳定脉冲解。
This paper gives a quantum mechanical analysis of the interaction between the electromagnetic field and the electron beam of free electron stimulated emission devices or linear electron accelerator.
本文对自由电子受激辐射器件与电子直线加速器中的电子注与电磁场的相互作用进行了量子力学分析，认为电子注的电子结构应由束缚电子对组成。
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