快重离子辐照效应的穆斯堡尔谱学研究

概述了利用穆斯堡尔效应开展的固体材料快重离子辐照效应研究的部分结果 ,并对建立在兰州重离子加速器 (HIRFL)上的在束穆斯堡尔谱学研究装置及其应用作了简要的介绍.Mssbauer spectroscopy study of irradiation effects induced by swift heavy ions in solid materials were briefly presented.Amorphization phenomenon of yttrium iron garnet irradiated by 1 GeV Ar ions has been investigated. For the first time, the nearly complete amorphous state was observed. Stainless steel 316L samples were irradiated with 54 MeV C ions and phase transformation of the samples was observed. HT 9 ferrite steel was irradiated with 510 MeV C ions. Its phase...     

中能重离子在铁氧体材料中的辐照效应

本文系统地评述了中能重离子在铁氧体材料小辐照效应的国际国内研究概况．并指出了利用兰州重离子研究装置（ＨＩＲＦＬ）可进一步开展的工作.This paper gives a systemic review on the recent progress in the study of irradiation effects in ferrite induced by energetic heavy ions, and also gives a suggestion thatsome experiments in this field can be carried out further by Heavy Ion Reseach Facility ofLanzhou(HIRFL ).     

中能重离子在铁氧材料中的辐照效应

本文系统地评述了中有重离子在铁氧体材料中辐照效应的国际国内研究概况，并指出了利用兰州重离子研究装置（HIRFL）可进一步开展的工作。     

快重离子引起的辐照效应

用PAT、CEMS、SEM和TEM分析观测了HIRFL提供的能量为几十MeV到几百MeV的碳离子在Ni、马氏体时效不锈钢、HT—9铁素体钢和316L不锈钢中引起的辐照效应,包括辐照引起的偏析、脱溶、相变和肿胀,以及辐照肿胀随辐照温度的变化关系,研究了510MeV的碳离子在高纯Ni中的损伤分布,并给出了95MeV的Ar离子模拟宇宙射线在宇宙飞行器中引起数字半导体器件“软故障”的最近结果。 The radiation effects were studied by means of PAT, CEMS, SEM and TEM in nickel,martensitic ageing stainless steel, ferrite steel HT-9 and stainless steel 316L induced by carbon ionswith energy of tens of MeV to hundreds of MeV delivered by HIRFL. It includes segregate,preciptale, phase change and void swelling, as well as temperature-relativity of the irradiationswelling. The damage distribution was also studied in nickel irradiated by 510MeV C~(6+). And the recentresults of Ar ions ...     

固体材料中快重离子辐照损伤建立过程中的离子速度效应

快重离子辐照损伤建立过程中的离子速度效应是近年来才发现的,离子速度效应是指快重离子在固体材料中引起辐照损伤的损伤截面, 损伤效率和损伤形貌的离子速度相关性, 简要介绍了固体材料中快重离子辐照损伤建立过程中离子速度效应的发现、研究现状和主要实验结果, 并进行了尝试性评价.     

快重离子在固体材料中的强电子激发效应

简要介绍了快重离子在固体材料中强电子激发效应的基本特点、研究现状和在HIRFL上获得的部分实验结果,并对今后的研究工作进行了展望。In this paper the outline of intense electronic excitation effects in solid materials induced by swift heavy ions and international research status were briefly reviewed. Few examples of experimental results obtained on HIRFL were presented. And also the developing tendency in the field was looked into the future.     

金属材料中高能重离子辐照效应的理论描述

简要介绍了高能重离子在金属材料中引起辐照效应的主要理论,特别是与电子能损引起的缺陷产生与演化、离子潜径迹形成、辐照相变以及各向异性塑性形变等效应相应的理论描述.     

金属材料中高能重离子辐照效应的理论描述

简要介绍了高能重离子在金属材料中引起辐照效应的主要理论 ,特别是与电子能损引起的缺陷产生与演化、离子潜径迹形成、辐照相变以及各向异性塑性形变等效应相应的理论描述.Experimental results showed that, for high energy heavy ion irradiations, electronic energy loss could play a dominant role in damage process in solid materials. In order to explain the experimental phenomena and results, a series of theoretical models based on Coulomb explosion or thermal spike mechanisms have been proposed. In the present paper, more attention was paid to theoretical expressions of high energy heavy ion irradiation induced effects in metallic materials ...     

快重离子在固体中引起的电子发射

简要介绍了快重离子与固体相互作用研究的状况和快重离子引起固体电子发射的机制 ,讨论了电子能损导致原子位移的 3种微观模型 ,即“库仑爆炸”模型、“热峰”模型和“激发排斥”模型 ,简述了研究电子发射的实验测量装置和测量方法 ,讨论了总电子发射产额与电子能损的关系以及靶俄歇电子和快传输电子测量在电子激发诱发辐照损伤微观机制研究中的应用 ,并介绍了重离子在 C靶中产生的离子径迹处的电子温度和聚丙稀靶中离子径迹势的提取方法. The recent progresses in experimental and theoretical studies of the collision between swift heavy ion and solids as well as electron emission induced by swift heavy ion in solids were briefly reviewed. Three models, Coulomb explosion, thermal spike and repulsive long lived states, for interpreting the atomic displacements stimulated by the electronic energy loss were discussed. The experimental setup and methods for measuring the electron emission from solids were described ...     

2.1GeV?Kr离子在聚碳酸酯膜中引起的辐照效应研究

用傅立叶变换红外光(FTIR)谱仪和紫外/可见光(UV/VIS)谱仪研究了2.1GeVKr离子在聚碳酸酯(PC)膜中产生的效应.研究结果表明,在高能Kr离子辐照下,PC膜中发生了断键、断链和键的重组,炔基的出现是键的断裂和重组的结果.这些效应与辐照剂量和电子能损有关.辐照也使PC膜中发生了从氢化非晶态碳向非晶态碳的转变,在UV/VIS中,波长为380,450和500nm处的相对吸光度随能量沉积密度的增加近似按线性变化.     

利用重离子辐照技术制备锂离子电池隔膜

用能量11.4MeV/u和注量1×108ions/cm2的197Au离子垂直辐照聚丙烯薄膜,通过电导测量法监测温度、硫酸浓度和重铬酸钾浓度对径迹蚀刻速率的影响,得到合适的蚀刻条件;成功制备出孔径范围在600—1000nm的重离子径迹聚丙烯孔膜,并用场发射扫描电镜对孔的形状及孔径大小进行了表征,对孔洞锥角的形成进行了分析,为重离子辐照技术制备锂离子电池隔膜提供了实验数据。