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81.
Elastic scattering angular distributions and total reaction cross-sections of ~(7,10,11,12)Be projectiles are predicted by the systematic ~9 Be global phenomenological optical model potential for target mass numbers ranging from24 to 209. These predictions provide a detailed analysis by their comparison with the available experimental data.Furthermore, these elastic scattering observables are also predicted for some targets out of the mass number range.The results are in reasonable agreement with the existing experimental data, and they are presented in this study. 相似文献
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The effective light-cone Harniltonian is extended to include the SU(3) flavor mixing interaction besides the confining potential. Solving the coupled J = 0 mass eigen equations for the up, down, and strange quark components numerically, the masses of π^0 and η, their radial wave functions, and rms radii are obtained in agreement with the experimental data. 相似文献
88.
This paper develops a QKD (quantum key distribution)-based queueing
model to investigate the data delay on QKD link and network,
especially that based on trusted relays. It shows the mean
packet delay performance of the QKD system. Furthermore, it proposes a
key buffering policy which could effectively improve the delay
performance in practice. The results will be helpful for quality of
service in practical QKD systems. 相似文献
89.
This paper reports that a novel type of suspended ZnO nanowire field-effect
transistors (FETs) were successfully fabricated using a
photolithography process, and their electrical properties were
characterized by I--V measurements. Single-crystalline ZnO
nanowires were synthesized by a hydrothermal method, they were used
as a suspended ZnO nanowire channel of back-gate field-effect
transistors (FET). The fabricated suspended nanowire FETs showed a
p-channel depletion mode, exhibited high on--off current ratio of
~105. When VDS=2.5 V, the peak transconductances
of the suspended FETs were 0.396 μS, the oxide capacitance was
found to be 1.547 fF, the pinch-off voltage VTH was about
0.6 V, the electron mobility was on average 50.17 cm2/Vs. The
resistivity of the ZnO nanowire channel was estimated to be
0.96× 102Ω cm at VGS = 0 V. These
characteristics revealed that the suspended nanowire FET fabricated
by the photolithography process had excellent performance. Better
contacts between the ZnO nanowire and metal electrodes could be
improved through annealing and metal deposition using a focused ion
beam. 相似文献
90.
用简化的联合PDF模型计算CH_4扩散燃烧 总被引:2,自引:0,他引:2
在二阶矩的范围内提出了联合的简化的PDF模型,在该模型中,假定联合的PDF满足反应物浓度和温度的三维高斯分布,因此化学反应速率可以很容易的通过积分获得。与其他模型相比,本模型可以方便的应用于湍流预混燃烧和扩散燃烧。为了对该模型进行检验,计算了甲烷的射流扩散燃烧。计算结果表明,相对于EBU,EBU-Arrhenius模型有了很大的改进,特别是轴线上的温度,同时计算结果与实验结果比较相符,表明该模型可以方便的考虑化学反应动力学和湍流扩散的影响。 相似文献