The study of energy bands in nucleus ~(102)Zr

Theoretical calculations of the energy bands in nucleus 102 Zr are carried out by taking the projected shell model approach, which has reproduced the experimental data. In addition, by analyzing band-head energies, corresponding configurations of yrast band, quasi-particle rotational bands and side bands, we have worked out the microscopic formation mechanism of axially symmetric deformation bands: The low-excitation deformation bands are attributed to the high-j intruder states 1g 7/2 and 1h 11/2 in the N=...     

平移法控制离散系统的倍周期分岔和混沌

利用平移系统的方法,实现了对离散非线性动力学系统的倍周期分岔的控制和混沌吸引子不稳定周期轨道的控制.只要选择适当的平移参数,使系统平移到不同位置,就可将系统控制在不同的预期轨道.将此方法应用到Logistic映射和Henon映射中取得了很好的控制效果.     

Characteristics of Raman spectra of natural clinochlore at 200 degrees C and 0.95-7.70 GPa

Variation of crystal structure of natural clinochlore with pressure was investigated by the approach of diamond anvil cell (DAC) and in situ micro-Raman spectroscopic measurement at 200 degrees C and up to 7.7 GPa. The 481 and 786 cm(-1) peaks shift towards high-frequency linearly with increasing pressure at 200 degrees C. The linear relations between Raman shift (N, cm(-1)) and pressure (P, GPa) for the two peaks are: N = 11.136P+482.6 (R2 = 0.987 4) and N = 5.055P+785.7 (R2 = 0.983 7), respectively. The 865 cm(-1) peak arising from the stretching mode of the Si-O(nb) shifts slightly because of the strong repulsion between T cations at the tetrahedral sites and M cations at the octahedral sites in the TOT layer. Raman shift of 481 cm(-1) and 786 means the shortening of the length of M-O(br) and Si-CO(br) bonds since the peaks are contributed by the stretching mode of the M-O(br) and Si-O(br) respectively. No phase transition of clinochlore under the experimental condition was found. The results indicate that chlorite minerals may be stable at least at a depth of 80-90 km in the cold subduction zones, and the fluid derived from chlorite dehydration may be an important fact for earthquake occurrence in the subduction zones.     

晶体X射线衍射实验的数据分析模式

针对粉末X射线衍射谱分析软件CSM的特点,利用CSM软件附带的用户程序库功能,实现了固溶体的物相分析和固溶度的定量计算,扩展了CSM软件的使用范围,提高了物相分析的准确程度.     

激光诱导晶化技术制备纳米硅的研究

利用电子束蒸发技术在硅衬底上镀一层2.5μm厚的含氢非晶硅薄膜,用氩离子激光器的488nm谱线作激发光线,对a-Si-H薄膜进行辐照,使a-Si-H晶化。其拉曼散射谱和电子衍射谱的结果表明,经激光辐照后,在a-Si-H薄膜中形成纳米硅粒。     

高温超导线圈在大电流下稳定性的数值仿真

在电力应用中,超导磁体可能会因为线圈工作于过流状态而失超,也可能会因为交流损耗而导致失超.为此,我们模拟了一个磁体在大电流过载下的稳定性情况.我们使用了一个建立在热传导方程和麦克斯韦方程基础上的差分数值计算方法来得出磁体内部的温度分布.我们对各种不同的电流冲击情况进行了考察,我们的模型可以使磁体设计者在实际制作之前能够估计一个比较安全的操作电流水平,有着广泛的实用价值.     

Integrable Rosochatius Deformations for an Integrable Couplings of CKdV Equation Hierarchy

We propose a method to construct the integrable Rosochatius deformations for an integrable couplings equations hierarchy. As applications, the integrable Rosochatius deformations of the coupled CKdV hierarchy with self-consistent sources and its Lax representation are presented.