Pressure-induced phase transition of nanocrystalline zinc sulfide

In situ energy dispersive X-ray diffraction measurements on nanocrystalline zinc sulfide have been performed by using diamond anvil cell with synchrotron radiation. There is a phase transition which the ultimate structure is rocksalt when the pressure is up to 16.0GPa. Comparing the structure of body materials, the pressure of the phase transition of nano zinc sulfide is high. We fit the: Birch-Murnaghan equation of state and obtained its ambient pressure bulk modulus and its pressure derivative. The bulk modulus of nanocrystalline zinc sulfide is higher than that of body materials, it indicate that the rigidity of nanocrystalline zinc sulfide is high.

Production of heavy and superheavy nuclei in massive fusion reactions

Within the framework of a dinuclear system (DNS) model, the evaporation-residue excitation functions and the quasi-fission mass yields in the 48Ca induced fusion reactions are investigated systematically and compared with available experimental data. Maximal production cross sections of superheavy nuclei based on stable actinide targets are obtained. Isotopic trends in the production of the superheavy elements Z = 110, 112–118 based on the actinide isotopic targets are analyzed systematically. Optimal evaporation channels and combinations as well as the corresponding excitation energies are proposed. The possible factors that influencing the isotopic dependence of the production cross sections are analyzed. The formation of the superheavy nuclei based on the isotopes U with different projectiles are also investigated and calculated.

基于电路复用结构的NIM\ECL\TTL电平适配器

In this paper,a multi-functional adapter circuit which can be used to accomplish level adaptation between the NIM,TTL,ECL levels will be described briefly.This circuit is designed based on the multiple-using structure of circuit unit.It is signal-width NIM standard module.The module is used for level adaptation between the different digital signals in the measurement system of nuclear physics experiments.中文文摘：基于单元电路复用结构,设计了NIM、ECL、TTL电平多功能适配器,介绍了电路复用结构和单元电路的设计原理。该插件用于核物理实验测量系统中不同逻辑电平的数字信号的适配与转换。