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基于一个改进的微观动力学输运模型--极端相对论量子分子动力学(UrQMD),较为系统地研究了从SIS能区到AGS和SPS能区,再到RHIC能区,入射能量跨5个数量级的重离子核反应及多个人们感兴趣的实验观测量,如粒子产额、集体流、核阻止以及两粒子HBT关联等.研究表明,不论单粒子观测量,还是两粒子关联...

关键词: 重离子核反应 , UrQMD模型 , 状态方程 , 截面的介质修正

EFFECT OF OXYGEN CONTENTS ON OXYGEN POTENTIALS OF H_2O-H_2 AND H_2O-H_2-INERTS GAS MIXTURES

FANG Zheng CHEN Xinmin(H.M.Chen) Central South University of Technology , Changsha , China FANG Zheng , Associate Professor , Department of Chemistry , Central South University of Technology , Changsha , China

金属学报(英文版)

By taking the effect of oxygen contents into account,a new set of formulae which represents the oxygen potentials of H_2O-H_2 and H_2O-H_2-inerts gas mixtures has been derived.Classi- cal representation is only a particular case of it.Som...

关键词: gas equilibration method , null , null , null

Ferromagnetism and superparamagnetism of ZnCoO : H nanocrystals

Applied Physics Letters

ZnCoO:H nanocrystals are weak ferromagnetic at room temperature with a small coercivity and a small remanence, whereas ZnCoO nanocrystals are paramagnetic. The thermal irreversibility of zero-field cooling and field cooling magnetizations of ZnCoO:

关键词: magnetic semiconductors;zno;hydrogen;cobalt

H+4, H+5和H+7团簇离子的测量和确认

杨百方 , 缪竞威 , 杨朝文 , 师勉恭

原子核物理评论 doi:10.3969/j.issn.1007-4627.2002.z1.038

报告了H+4, H+5, H+7等团簇离子的测量结果. 确认可以由...

关键词: H+4团簇离子 , H+5团簇离子 , H+7团簇离子

H型钢裂纹成因分析

王硕明 , 丁志军 , 于恒 , 张彩军

钢铁钒钛

研究了某H型钢厂采用半敞开方式浇注的H型钢腹板裂纹产生的原因.在该厂选取了26块有代表性裂纹的试样进行了细致的研究,研究认为:H...

关键词: H型钢 , 裂纹 , 夹杂物 , 数学模拟

国内热轧H型钢工艺特点

徐峰 , 何彩红 , 徐勇

钢铁研究

简述了国内H型钢的发展现状,通过列举国内典型H型钢生产线,介绍分析了轧制H型钢的1-3-1、1-3和连轧三种工艺布...

关键词: H型钢 , 生产工艺 , 万能轧机

INVESTIGATION ON DEPOSITIONS AND HARDNESS CHARACTERISTICS OF a SiC:H FILMS

X.F.Rong and Z.Y.Qin College of Mechanical Engineering , Taiyuan University of Technology , Taiyuan 030024 , China

金属学报(英文版)

In this paper, a deposition feature of a SiC:H films deposited by a RF sputtering system and a effect on the hardness of the films with various deposition conditions are investigated, and the effects of the silicon on a C:H are studie...

关键词: a SiC:H film , null , null