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target isotope
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  “target isotope”译为未确定词的双语例句
     and the collision loss is decreased and the collection ratio is increased, if the target isotope concentration is higher.
     而目标同位素丰度较高的情况下 ,离子引出过程的碰撞损失率较低 ,收集率较高 .
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  相似匹配句对
     N TARGET
     命中目标
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     Preparation of isotope ~(208)Pb target
     同位素~(208)Pb靶的制备
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     Preparation of isotope target of Pb by electrodeposition from organic solution
     从有机溶液中用电沉积法制备铅同位素靶
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     Target of Angiostatin
     Angiostatin作用靶点的初步研究
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     Laser isotope separation
     激光分离同位素
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  target isotope
The waste concentration of the steps with respect to the target isotope is varied in order to find the best cascade variant in accordance with the optimization criterion chosen.
      
A method is developed for determining the optimal parameters of a cascade for separating multicomponent isotopic mixtures with a prescribed output concentration for the target isotope.
      
Silicon behaves as an infinitely dilute matrix for thermal neutron activation analysis (NAA) because the only target isotope that produces an (n,γ) reaction (30Si) has a very low capture cross section and natural abundance.
      
Target isotope effect in high energy photon production atE/A=10 MeV
      
However, the target isotope dependence of the cross sections could not be explained by such an assumption.
      
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One-dimensional ion extraction and collection is studied by parallel electrode method using particle in cell-Monte Carlo collision (PIC-MCC) simulation. The energy and angle distribution of extracted ions is recorded and the sputtering loss is calculated. The results show that the extraction time and collision loss are decreased by increasing extraction voltage, but the sputtering loss increases and collection ratio decreases. The extraction time is decreased and the collection ratio is increased by increasing...

One-dimensional ion extraction and collection is studied by parallel electrode method using particle in cell-Monte Carlo collision (PIC-MCC) simulation. The energy and angle distribution of extracted ions is recorded and the sputtering loss is calculated. The results show that the extraction time and collision loss are decreased by increasing extraction voltage, but the sputtering loss increases and collection ratio decreases. The extraction time is decreased and the collection ratio is increased by increasing electron temperature, while the extraction time is increased and the collection ratio is decreased by increasing initialized plasma density;and the collision loss is decreased and the collection ratio is increased, if the target isotope concentration is higher. Improving the parallel electrode method leads to decreasing sputtering loss and increasing collection ratio greatly.

采用粒子模拟 MonteCarlo碰撞 (particleincell_MonteCarlocollision)方法研究了原子蒸气激光同位素分离工程中一维平行板静电场法离子引出和收集过程 ,记录引出离子的能量分布和角度分布 ,计算离子在收集板上造成的溅射损失 .模拟结果表明 ,增加引出电压可以缩短引出时间 ,降低碰撞损失 ,但是增加了溅射损失 ,使得收集率降低 ;增加电子温度可以缩短引出时间 ,提高收集率 ;增加初始等离子体密度将使引出时间增加 ,收集率降低 ;而目标同位素丰度较高的情况下 ,离子引出过程的碰撞损失率较低 ,收集率较高 .提出了一种平行板静电场的改进方法 ,大大降低了溅射损失 ,提高了收集率 .

Experiments of ion extractions of cesium plasmas produced between two parallel plates by the fourth harmonics of a YAG laser (266 nm) have been carried out. The influences of applied voltage and initial ion density on the ion extraction process have been discussed and a scaling relation has been formulated. But the ion extraction time does not always decrease with the applied voltage. In the experiment, the ion extraction time increases when the applied voltage is above 1200 V. The existence of ion sputtering...

Experiments of ion extractions of cesium plasmas produced between two parallel plates by the fourth harmonics of a YAG laser (266 nm) have been carried out. The influences of applied voltage and initial ion density on the ion extraction process have been discussed and a scaling relation has been formulated. But the ion extraction time does not always decrease with the applied voltage. In the experiment, the ion extraction time increases when the applied voltage is above 1200 V. The existence of ion sputtering peak has been observed above a certain applied voltage, which is coincident with the theoretical analysis. A best applied voltage is obtained from the experiments concerning not only the ion extraction time but the collection of target isotope ions.

为研究平行板静电场法离子引出的规律,利用对由YAG四倍频脉冲激光(266nm)一步电离产生的铯等离子体进行了多次离子引出实验。结果发现,离子引出时间随外加引出电压的增加而减小,随离子初始密度的增加而增长。通过对实验数据的分析,获得了在此实验条件下光致瞬态铯等离子体离子引出时间与外加引出电压和离子初始密度之间关系的经验公式。但是,离子引出时间并非一直随电压的增加线性减小。在外加电压超过1200V以后发现离子引出时间有增加的趋势。在外加电压高于1000V以后观察到溅射离子峰的存在,并讨论了溅射现象的存在对离子引出时间的影响。通过对离子引出与收集和溅射现象的分析获得了本实验条件下平行板静电场法离子引出中外加电压的最佳值。

 
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