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   粒子电离 的翻译结果: 查询用时:0.215秒
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粒子电离
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  “粒子电离”译为未确定词的双语例句
     It is found that the response frequency and the ionization rate will be improved if the coefficient is increasing.
     通过计算比较得知二次电子发射系数越大 ,响应频率越快 ,粒子电离率越高 ;
短句来源
     For a moderate disturbed situation, things become more complex: The strength of ionization caused by soft particles in the cleft around the magnetic noon decreases somewhat, while ionization caused by higher energy particles in the aurora area increases a lot before noon and afternoon.
     在中等扰动环境下情况更加复杂 :磁正午前后极隙区内软粒子沉降的电离强度有所减小 ,而上、下午极光区内的高能粒子电离则有较大增加 .
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  相似匹配句对
     The Energy of the H-particle
     H粒子的能量
短句来源
     M-SUBSHELL IONIZATION OF Th AND U BY ALPHA PARTICLE BOMBARDMENT
     α粒子轰击钍和铀引起的M亚壳层电离
短句来源
     NUMERICAL SIMULATION OF SECONDARY ELECTRON BEHAVIOR NEAR THE SURFACE OF IRRADIATED CONDUCTOR
     导体周围稀薄空气电离次级电子等离子体的粒子模拟
短句来源
     J PARTICLE-NUCLEUS SCATTEIUNG
     J粒子在原子核上的散射
短句来源
     THE THEORETICAL INVESTIGATION OF HOT-CATHODE IONIZATION GAUGE
     电离真空计的微观理论
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  particle ionization
The problem of modeling the rate of a two-particle ionization reaction occurring at an active surface site is considered.
      
Quadratic (Fowler) plots, originally developed for bulk surfaces, were found to provide a good fit to the threshold shape and were used to obtain the particle ionization potentials.
      


The physical processes of the neutral beam heated plasma is described. The penetration attenuation of the neutral beam in the plasma has been calculated, analysed and compared by means of two kinds of calculation methods based on different physics models. The dependence of neutral beam decay in the plasma on the beam energy, plasma parameters and impurity has been investigated. The calculation results of the beam attenuation for HL-1M typical plasma parameters also have been given. In numerical calculation taking...

The physical processes of the neutral beam heated plasma is described. The penetration attenuation of the neutral beam in the plasma has been calculated, analysed and compared by means of two kinds of calculation methods based on different physics models. The dependence of neutral beam decay in the plasma on the beam energy, plasma parameters and impurity has been investigated. The calculation results of the beam attenuation for HL-1M typical plasma parameters also have been given. In numerical calculation taking multistep collision processes of the interaction between the beam and the plasma into account, its physics model includes excitation, collisional and radiative de-excitation, ionization, charge exchange and Lorentz field ionization of excited atoms. In the analytical calculation using the simple physics model, the ionization of the neutral beam and the charge exchange between the beam and the particles of the plasma and impurity are only taken into account. Both calculation results show that the penetration coefficient of the neutral beam entering the plasma increases with the neutral beam energy E0 ,and decreases with the plasma density ne,and show that comparing the analytical calculation using simple physics model with the numerical calculation taking multistep processes into account in the range of ne<1014 cm-3 and 20

阐述了中性束加热等离子体的物理过程,并利用基于不同物理模型下的两种计算方法对中性束在等离子体中的透射衰减情况进行了计算、分析和比较,给出了束在等离子体中的衰减与束能量、等离子体参数及杂质情况的关系及在HL-1M等离子体典型参数下的计算结果。在考虑了中性束与等离子体(含杂质)相互作用多级过程的数值计算中,其物理模型考虑了激发、碰撞和辐射去激发、被激发原子的Lorentz场电离以及电离、电荷交换等多种过程。在利用简化物理模型的分析计算中,仅考虑了中性束与等离子体和杂质粒子的电离和电荷交换过程。两种计算结果都表明中性束在等离子体中的穿透系数均随中性束能量E_0的提高而增大,随等离子体密度n_e的增高而减少,并表明在ne≤10~(14)cm,20≤E_0(keV/u)≤100域内,利用简化物理模型的分析计算与考虑多级过程的数值计算相比,两者的等离子体对中性束的有效阻止截面相差≤20%。

The temperature of plasma produced by pulse discharge in water (PPDW) is about 2×10 4K to 5×10 4K,and the max. pressure of PPDW reaches 1~10GPa.So the PPDW should not be treated as an ideal gas.In this work,the corrections to the ionization potentials in an equilibrium equation of PPDW,and the pressure from the degeneracy of electrons,the effect among charged particles and perturbations of energy eigenvalue of atoms were calculated.The calculation results show that:① When the total density n of H,O,H ...

The temperature of plasma produced by pulse discharge in water (PPDW) is about 2×10 4K to 5×10 4K,and the max. pressure of PPDW reaches 1~10GPa.So the PPDW should not be treated as an ideal gas.In this work,the corrections to the ionization potentials in an equilibrium equation of PPDW,and the pressure from the degeneracy of electrons,the effect among charged particles and perturbations of energy eigenvalue of atoms were calculated.The calculation results show that:① When the total density n of H,O,H +,O + and O 2+ is about 10 29 m -3 ,the electron density, n e increases byabout 70% considering the correction of ionization potential;② The degeneracy of electrons has little effects on the pressure of PPDW;③ The effects among charged particles makes the pressure of PPDW decreased at higher temperature,by no more than 10%;④ When n =10 29 m -3 and T≈ 2×10 4K,the pressure goes up by about 30% for the perturbation of atom energy level.

水中放电等离子体通道内温度达 2× 10 4 ~ 5× 10 4 K、而压力达 1~ 10GPa。在这样的参数下 ,等离子体的状态方程已不能用理想气体状态方程来描述。首次考虑了粒子间的相互作用对水中放电等离子体参数下粒子电离能的影响 ,计算了电子的简并性、带电粒子间的库仑相互作用、原子内部能级扰动所产生的压力。计算结果表明 :当H、O原子和离子的总密度n =10 2 9m- 3时 ,若考虑电离能漂移 ,则电子密度提高的最大幅度达 70 % ;电子的简并性对压力的影响很小 ;粒子间的库仑相互作用在高温区使总压减小较显著 ,但在所计算的参数范围内 ,其幅值也不大于 10 % ;当n =10 2 9m- 3、T≈ 2× 10 4 K时 ,原子内部能级的扰动使总压增大约 30 %。

The data of f 0 F2, measured by a Digisonde Portable Sounder (DPS 4) at Zhongshan Station of Antarctica in 1995, the hemispheric power index and the midnight equatorward boundary of the aurora, estimated by observations of American NOAA and DMSP satellites are used to examine features of the polar ionosphere. The results show that the major source of electron and ion production at Zhongshan Station is almost completely dependent on particles precipitated from the magnetosphere. Under a quiet environment...

The data of f 0 F2, measured by a Digisonde Portable Sounder (DPS 4) at Zhongshan Station of Antarctica in 1995, the hemispheric power index and the midnight equatorward boundary of the aurora, estimated by observations of American NOAA and DMSP satellites are used to examine features of the polar ionosphere. The results show that the major source of electron and ion production at Zhongshan Station is almost completely dependent on particles precipitated from the magnetosphere. Under a quiet environment of the solar activity and geomagnetic variation, the soft particles in the cleft are the controlling source of ionospheric ionization at dipole magnetic noon. The ionized effect of energy particles is also important during several hours both in the morning and afternoon when the station lies in the auroral region. The electron density is much lower at night in the polar cap areas. The ionization action of solar EUV radiation in summer makes the monthly median of f 0 F2 1—1.5hr MHz larger than that in winter, and the time of the peak of the f 0 F2 diurnal variation in summer is 1—2hr earlier than in winter. During a strong disturbance period, the cleft and auroral regions move toward lower latitudes. The electron density will decrease a lot and the ionospheric echo may often not be received when the station is located at the polar cap area. The situation is more complex under a moderate disturbed environment. Since at high latitudes the magnetospheric convection velocity can become very large and the recombination coefficient of the colliding ion and neutral is highly increased, global meridional thermospheric circulation has not led a remarkable intension of electron density in the high latitude ionospheres. During disturbed periods the southward plasma flux carried by convection has not noticeable effect to increase f 0 F2 at Zhongshan Station too.

本文利用电离层数字测高仪 (DPS - 4)所测的f0 F2和从美国NOAA和DMSP卫星观测估算的半球功率指数和午夜极光区赤道侧边界纬度等资料 ,考察中山站电离层的极区特征。结果表明 ,冬季中山站电离层内的电离生成主要取决于从磁层沉降的粒子。在太阳活动和地磁变化宁静环境下 ,磁正午极隙区内的软粒子是最主要的电离源 ,它能使f0 F2达全天的最大值 ;上、下午各有数小时处于极光带内时 ,高能粒子的电离作用也很重要 ;夜间进入极盖区后 ,电子密度则很低。夏季太阳辐射电离效应使f0 F2值比冬季增加 1— 1 .5MHz,而其日变化的最大值时间也提前了 1— 2hr。发生很大扰动时 ,极隙区和极光带的位置均向低纬方向移动。若中山站日间也处于极盖区内时 ,电子密度会大幅度下降 ,并常接收不到电离层回波的信号。在中等扰动环境下情况更加复杂。由于高纬电离层对流速度很高 ,离子 /中性分子间的碰撞复合系数就很大。热层中性大气全球经向环流对高纬电离层电子密度的增加无显著作用。磁暴期间中午从极隙区向南的等离子体对流对中山站f0 F2的增高也无明显影响。

 
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