排序方式: 共有15条查询结果,搜索用时 437 毫秒
1.
The theoretical proton-40Ca optical potential is constructed based on theα-particle model of the nucleus. With this potential, the differential cross section, analysing power and the spin rotation function for 200 MeV proton-40Ca elastic scattering are calculated. The results are in good agreement with the experimental data. 相似文献
2.
Yao Kun Liu Zheng Li Hang Xu Dan Zheng Wen-Hua Quan Yi-Wu Cheng Yi-Xiang 《中国科学:化学(英文版)》2022,65(10):1945-1952
Science China Chemistry - We report the rational design of a dual stimulus-activated quaternary chiral emission nematic liquid crystals (Q-N*-LCs) containing light-driven chiral dopant R-S-R-1, a... 相似文献
3.
Elastic proton-40Ca scattering at Tp = 200 MeV is calculated within the Glauber theory on the basis of the α-particle model. The results are compared with the experimental data and those calculated in the relativistic model. 相似文献
4.
The Expansion Method of Mixed Basis Vectors of Lower-energy States and Harmonic Oscillators in Calculation of Bound States of Few-Body Systems
下载免费PDF全文
![点击此处可从《中国物理C(英文版)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
In this paper,the harmonic oscillator approach to the bound states of few-body ststems is developed and the lower-energy states are introduced as basis vectors and mixed with a part of harmonic oscillator vectors to calculate the binding energy.The lower energy levels of 3-α system and 9Be are presented and compared with experiments or other calculations.The results are satisfactory. 相似文献
5.
A variational calculation for neutron rich nucleus l1 Li is made in the 9Li + n + n model. The 9Li-neutron and neutron-neutron interactions are chosen to be of the Gaussian potentials with a repulsive core and an attractive tail. The strlicture and interparticle correlations are studied. A direct verification supporting neutron halo structure is found by inspecting the correlated densities. 相似文献
6.
Lu Y Zhou Y Quan YW Chen QM Chen RF Zhang ZY Fan QL Huang W Ding JF 《Organic letters》2011,13(2):200-203
Monodisperse macrospirocyclic oligomers were prepared using self-condensation of the Friedel-Crafts reaction. Through the C-9s of the central fluorene units of four surrounding oligofluorenes, four carbazole units are connected in a series to form a macrocyclic core. These rodlike oligofluorenes form a rigid three-dimensional structure, affording the resulting macrocyclics a high steric hindrance for close interchain packing. 相似文献
7.
利用耗散粒子动力学(DPD)方法研究了二元聚合物刷体系的相分离行为. 发现组分间相容性的差别对膜厚的影响很小, 对纵向相分离结构中相区尺寸的影响则较大. 溶剂质量对控制聚合物刷膜的厚度和密度具有决定作用, 同时对层状膜结构也具有调控作用. 结果表明, 通过控制环境条件, 二元聚合物刷膜材料在快速且可逆地调节表面润湿性方面具有潜在的应用价值. 相似文献
8.
以环氧氯丙烷为桥接, 将具有较强给电子能力的芳叔胺(ATA)结构引入香豆素衍生物C分子中, 通过芳叔胺结构的光化学促进作用加速香豆素基元的光二聚反应. 用紫外(UV)和荧光(FL)光谱等手段对该香豆素衍生物进行表征. 结果表明, 芳叔胺结构的引入可有效增强香豆素基元在260-400 nm之间的吸收. 紫外点光源光二聚反应实验表明, 芳叔胺结构的引入使香豆素基元的光响应性能得以大幅增强, 在相同光照条件下, 其在匀速反应区间内对光照时间的依赖性的斜率高达6.47, 光二聚反应程度达到80%时所需光照时间仅为29 s. 相似文献
9.
10.
The optimal velocity model of traffic is extended to take
the relative velocity into account. The traffic behavior is investigated
numerically and analytically with this model. It is shown that the car
interaction with the relative velocity can effect the stability of the
traffic flow and raise critical density. The jamming transition between
the freely moving and jamming phases is investigated with the linear
stability analysis and nonlinear perturbation methods. The traffic jam is
described by the kink solution of the modified Korteweg--de Vries equation.
The theoretical result is in good agreement with the simulation. 相似文献