基于Jupiter的μCL inux的移植及其应用程序开发

随着新技术的发展,嵌入式系统已经越来越多地应用于工业现场控制、数字图像处理、网络设备和信息家电等复杂的控制系统中,然而缺乏操作系统支持的嵌入式设备已经不能满足日益提高的性能需求。本文介绍了韩国ADC公司推出的不同于ARM系列体系结构的CPU—SE 3208以及如何在基于SE 3208的Jupiter开发板的硬件基础上,建立μCLinux操作系统的开发平台,并在开发板上移植μCLinux操作系统和应用程序以及在μCLinux操作系统下开发多进程的应用程序。

Na离子和Cl离子引起He原子直接多重电离过程的研究

利用 2～ 8MeV的Naq+、Clq+( q =2 ,3,4 ,5 )轰击氦原子 ,对碰撞的直接多重电离过程进行研究。实验采用反冲离子 -散射离子飞行时间符合技术 ,通过反冲离子飞行时间谱区分不同价态反冲离子 ;利用静电偏转和位置灵敏探测技术区分不同电荷态散射离子 ;结合CAMAC -PC多参数获取系统得到一定价态散射离子所对应的反冲离子电荷态分布谱 ;经分析该谱得到直接多重电离截面与直接单电离截面之比R2 1。讨论了R2 1随入射离子速度和电荷态的变化关系

EXPERIMENTAL INVESTIGATION OF THE STELLAR REACTION S-30(p, gamma)(31) Cl VIA COULOMB DISSOCIATION

The Coulomb dissociation of the proton-rich nuclei Cl-31 was studied experimentally using Cl-31 beams at 58 MeV/nucleon with a lead target. The relative energy between the reaction products, S-30 and proton, was obtained. The first excited state in Cl-31 was observed which is relevant to the resonant capture of stellar S-30(p, gamma)Cl-31 reaction

Theoretical study on the formation mechanism of Iso-CH2I-Cl

The dissociation and isomerization reaction mechanism on the ground-state potential energy surface for CH2ClI are investigated by ab initio calculations. It is found that the isomer iso-CH2I-Cl can be produced from either the recombination of the photodissociation. fragments or the isomerization reaction of CH2ClI, rather than from isomerization reaction of iso-CH2Cl-I. Further explanations of experimental results are also presented. (C) 2003 Wiley Periodicals, Inc.