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本文用280nm脉冲激光光解被Ar和Xe基体隔离的Fe(CO)5以产生配位不饱和的Fe(CO)3。用傅里衰变换红外光谱仪实时监察光解停止后Fe(CO)3和CD的复合,并以Smoluchowski扩散控制反应动力学理论模型求得Fe(CO)3与CO的反应半径为4.0×10^-10m,CO在10K的Ar和Xe基体中的扩散系数分别为2.2×10^-23m^2/s和4.5×±∩^-23m^2/s。 相似文献
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The structural modification of C60 films induced by 300-keV Xe-ion irradiation was investigated. The irradiated C60 films were analysed using Fourier transform infrared spectroscopy, the Raman scattering technique, ultraviolet/visible spectrophotometry and atomic force microscopy. The analysis results indicate that the Xe-ion irradiation induces polymerization and damage of the C60 molecule and significantly modifies the surface morphology and the optical property of the C60 films. The damage cross-section for the C60 molecule was also evaluated. 相似文献
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Classical molecular dynamics simulations are used to investigate the fission gas Xe behavior in a U-Mo alloy fuel matrix. The embedded atom method potential proposed by Smirnova et al. is used to describe the U-Mo-Xe system. The results show that the initial configuration of interstitial Xe atoms in U-Mo alloys is very instable and has a strong tendency to get together and to form a Xe bubble by ejecting the adjacent U atoms and Mo atoms from their former normal lattice sites. The pressure in Xe bubbles is initially quite high and then drops with increasing Xe concentration obviously. The matrix swelling of U-Mo alloys associated with the Xe bubble growth follows approximately a linear relationship with the ratio of Xe to U at low Xe concentration while the rate of swelling increases rapidly at high Xe concentration. The simulation results are in good agreement with the experimental data. The recovery of the damaged structure in the U-Mo alloys matrix is also investigated. It is shown that a damaged structure cannot be recovered completely after a system is relaxed for a long time while still having lots of defects. 相似文献
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在准静态隧道电离理论模型和准经典阈上电离理论模型的基础上,建立了一个描述基于光场感生电离的椭圆偏振光场电离电子能量分布的简单模型,推导出了既易于理解又相对简单适用的描述椭圆偏振光场的电子能量分布函数解析表达式.利用此式数值计算了不同偏振参量下的椭圆偏振光场中类钯氙系统的电子能量分布曲线,计算结果表明在相同的激光功率密度下,偏振参量对基于OFI电子碰撞机制的X射线辐射强度是有影响的,并与报道的实验结果一致
关键词:
椭圆偏振光场
电子能量分布
类钯氙系统
电子碰撞机制 相似文献
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Structures of a series of activated carbon fibers were modified by impregnating them withorganic and inorganic materials such as Methylene blue(Mb)、 p-nitrophenol (PNP)、 NaCl or byoxidizing with KMnO4 or HNO3. The influence of pore filling or chemical treatment on their xenonadsorption properties was studied. The experimental results show that Mb and PNP filling ofactivated carbon fibers result in the decrease of xenon adsorption capacities of these treated ACFs,which is due to the decrease of their surface area and micro-pore volume. However, the adsorptioncapacity increases greatly with oxidizing treatment of activated carbon fibers by 7mol/L HNO3. 相似文献