C12BE-SDS-TX-10三元表面活性剂非理想溶液复配增效作用

C12BE-SDS-TX-10三元表面活性剂非理想溶液复配增效作用;表面活性剂;三元;增效作用;非理想溶液;复配     

照相法研究抛射体运动

介绍了利用多次曝光法研究了小球的抛射体运动，设计了实验装置，通过用表差法处理实验数据，从而探索抛射体的运动规律并求得重力加速度值，通过对实验的误差分析，给出了结果的不确定度评定。     

In-Beam Mössbauer Spectroscopy after GeV-Ion Implantation at an On-line Projectile-Fragments Separator

Mössbauer spectra of ⁵⁷Mn/⁵⁷Fe in FZ-Si are measured between 30 and 800 K during implantation of radioactive ⁵⁷Mn (a half-life of 1.45 min), which are produced via a projectile nuclear fragmentation. The primary implantation energy and the total fluence of ⁵⁷Mn are 2 GeV and 10^{10 57}Mn/cm² typically for one spectrum, respectively. The spectra up to 600 K can be fitted by two components corresponding to Fe atoms on interstitial and substitutional sites. As the temperature is elevated, the area of the interstitial line decreases above 500 K, while the substitutional line increases. At 700 K, both lines merge into a broad single line, which can be interpreted as a motional averaging due to interstitial Fe jumps into vacancies.

     

A computational analysis of the ballistic performance of light-weight hybrid composite armors

The ability of hybrid light-weight fiber-reinforced polymer-matrix composite laminate armor to withstand the impact of a fragment simulating projectile (FSP) is investigated using a non-linear dynamics transient computational analysis. The hybrid armor is constructed using various combinations and stacking sequences of a high-strength/high-stiffness carbon fiber-reinforced epoxy (CFRE) and a high-ductility/high-toughness Kevlar fiber-reinforced epoxy (KFRE) composite laminates of different thicknesses. The results obtained indicate that at a fixed thickness of the armor both the stacking sequence and the number of CFRE/KFRE laminates substantially affect the ballistic performance of the armor. Specifically, it is found that the armor consisting of one layer of KFRE and one layer of CFRE, with KFRE laminate constituting the outer surface of the armor, possesses the maximum resistance towards the projectile-induced damage and failure. The results obtained are rationalized using an analysis of the elastic wave reflection and transmission behavior at the inter-laminate and laminate/air interfaces.     

95MeV/u的12C炮弹产生的二次束流强度研究

使用GANIL双消色差谱仪LISE,系统研究了95MeV/u的¹²C束流轰击铍、铜和金靶所产生的二次束流强度.实验结果和程序LISE及INTENSITY的计算结果作了比较.结果表明:对于β稳定线附近的二次束流,由程序LISE及INTENSITY计算得到的二次束流强度峰值和实验结果基本相符.但对于远离β稳定线的二次束流,计算结果高于实验值.产生二次束流的最佳靶厚相应于束流在靶子中损失大约30%的能量.铍靶产生的二次束流强度高于其余两种靶子.     

Alpha particle scattering in the rigid projectile approximation

We study elastic α-particle scattering offp,α-particle and¹²C targets at 17.9 GeV/c incident momentum in the rigid projectile approximation of the Glauber model. Differential and total cross-sections are computed and compared with the data. Reasonable agreement with the observed differential cross-sections is found for small momentum transfers but short-range dynamical correlations in the target will probably have to be taken into account to get better agreement at larger momentum transfers, particularly in the case of α-¹²C scattering.     

库仑程函近似下非弹性散射振幅角分布的广义函数分析

在库仑程函近似框架下,引进实参量(时间扫描参数)积分,将能壳上跃迁矩阵元分为靶的结构因子和弹的扭曲因子,导出了非分波扭曲因子的主项表达式和结构因子的解析表达式,利用广义函数方法分析了电子与类氢离子的非弹性散射角分布.     

Spherically confined hydrogenic atoms under classical non-ideal plasmas: Scaling law for the critical cage size

An elegant calculation is carried out to investigate the effects of the non-ideality of classical plasma on the energy levels of the hydrogenic atoms held in a spherical cage. Organized effect of the non-ideal classical plasma is described by an analytical pseudopotential which contains the Debye length $D$ and non-ideality parameter $\gamma$ as parameters. Convergent results for the bound states are obtained variationally by utilizing a large trail function containing cosine term which automatically takes care of the requisite boundary conditions. For the plasma-free case, our results are in excellent agreement with the most accurate results available in the literature. An inclusive study is made to explore the changes emerging in the energy levels due to the variation of the plasma parameters and cage size. Special emphasis is made on the determination of critical cage size precisely. The present study specifically reveals that the increasing plasma non-ideality leads to the elongation of the critical cage size. Moreover, it is empirically found that the critical cage size for a given hydrogenic atom can be obtained from a scaling law.     

基于DISLab平抛运动实验的改进

利用＂数字信息系统实验室＂（DISLab）对物体的平抛运动进行了实验研究,并针对实验装置中存在问题提出了改进方案,最后将改进后的实验装置与原实验装置的实验结果进行比较研究,结果表明改进后的实验装置明显地提高了测量精度。     

钢筋混凝土靶板在弹丸冲击及爆炸载荷下响应的数值模拟

 采用HJC混凝土损伤本构模型及LS-DYNA的流固耦合算法,分别对钢筋混凝土靶板在弹丸冲击和爆炸载荷作用下的响应进行了有限元数值模拟,其中模拟参数由实验数据拟合重新获取。将模拟结果与实验结果和经验公式进行对比分析,结果表明：数值模拟再现了弹体贯穿靶板过程中的开坑、隧道及漏斗碎裂区,计算得到的弹体弹道极限及残余速度与实验数据吻合较好;此外,数值模拟也很好地再现了炸药爆炸后冲击波的传播过程以及爆炸载荷作用下混凝土的破坏情况,模拟结果与实验现象具有良好的一致性。