新型的核乳胶探测技术

介绍了三种可以准确,快速,半自动（全自动）测量的核乳实验新技术,这些技术特别适合于测量超高能重离子碰撞中心事例中带电粒子的发射角。     

基于通用串行总线的核乳胶观测与前期处理系统

简要介绍采用通用串行总线（universal serial bus,USB)系统组成的核乳胶观测和图像处理系统。该系统采用了简练的硬件设计和完善的软件处理，可极大提高观测效率和精度，尤其适用于高能、超高能重离子碰撞的事件。     

60A GeV氧原子核在核乳胶中四分裂事例的遍举测量

一、引言裂变是原子核的一种重要运动形态,对裂变现象及其机制的研究是原子核物理学的一个重要方面。对于静止靶核的裂变已经进行过大量的研究,但对相对论性原子核的裂变现象的研究还刚刚开始。EMU-01国际合作组用西欧核子中心SPS加速器把~(16)O加速到15,60和200A GeV,为核物理和粒子物理的研究开辟了一个新的领域。     

抗坏血酸对核乳胶性能的影响

文章介绍抗坏血酸对核乳胶灵敏度、灰雾密度及潜影衰退性能的影响，并与日本富士ＥＴ－７Ｂ型乳胶的潜影稳定性能在不同温度和相对湿度条件下作相应比较。     

基于PQ工艺的核乳胶冲洗技术研究

在微型化探测技术研究课题中进行核乳胶α粒子辐射模拟测量实验及核乳胶在特殊环境的性能研究,获得实验数据和模拟结果,在该阶段利用研发的PQ工艺冲洗出100余片经α源辐照后的核乳胶试片,清晰地观测到正常的α粒子径迹。总结介绍了核乳胶PQ显影液冲洗技术的工艺流程及具体操作方法。     

兰州重离子加速器冷却储存环中束流位置测量系统的研制

介绍了兰州重离子加速器冷却储存环中束流位置测量系统设计的基本原理、ＰＩＣＫＵＰ探针参数的选择以及有关物理的计算。并完成了桌上实验,得出了有关结论。     

一种线阵CCD显微测量系统的标定方法

使用参数分离标定的方法对微小物体的在线高精度测量控制系统进行标定。研究了线阵CCD显微相机的成像模型,提出相机的内外参数分离标定方法,在实验室模拟工业环境下和工业现场分别标定相机的内参数和外参数。参数分离标定的方法简化了工业现场的标定任务,相机可应用于多种测量环境,且标定模板容易制作。实验证明该标定方法精度较高,标定后相机的极限误差为2.05μm。     

3.7A GeV ^16O与核乳胶作用的间歇行为研究

实验结果表明，在赝快度间隔１－０．１范围内，阶乘矩随赝快度间隔减小而增大，即核反应过程存在间歇行为，且间歇指数随能量的增加而减小。     

New developments at nuclear emulsion experiment

Three new nuclear emulsion techniques used for measuring emission angles of charged particles in central events at ultra-high evergy heavy-ion collisions are fully described.     

高能重离子诱发核反应中灰粒子产生

采用ＥＭＵ０１国际合作组的原子核乳胶为探测器,系统地研究了能量为１４．６,６０,２００ＧｅＶ／ｕ的＾１６Ｏ核,２００ＧｅＶ／ｕ的＾３２Ｓ诱发核反应产生的灰粒子平均多重数及角分布,以描写相对论性核－核碰撞的ＬＵＣＩＡＥ模型为基础,进行ＭｏｎｔｅＣａｒｌｏ模拟的结果与实验数据一致。     

KD-418IV型微机核子计量系统的性能检定

根据《中华人民共和国国家计量检定规程（ＪＪＧ８１１－９３,核子皮带秤）》对ＫＤ－４１８ＩＶ型微机核子计量系统的功能进行了测试,并对其计量性能作了检定。     

The new Melbourne nuclear microprobe system

The spatial resolution in a nuclear microprobe system has been stalled at around 1 μm for many years. In Melbourne we are presently constructing a new facility which aims to break this barrier. The key ingredients of the new facility are: (i) a novel magnetic quadrupole lens quintuplet probe forming system that is a further optimised version of the CSIRO/MARC system presently in operation in Sydney, (ii) high solid angle detectors for particles, X-rays and secondary electrons and (iii) a fast data acquisition system able to cope with greater than 20 kHz count rates from up to four detectors with full deadtime correction. This paper describes the optimised probe forming lens system which is comprised of four thin lenses and one thick lens to produce an orthomorphic probe forming lens system with a demagnification of 150.     

A fluorescent screen + CCD system for quality assurance of therapeutic scanned ion beams

A fluorescent screen + a charge coupled device (CCD) system were developed to verify the performance of scanned ion beams at the HIMAC. The fluorescent light from the screen is observed by the CCD camera. Two-dimensional fields, produced by the scanning process, i.e., the position and the size of the beam for each scan, represent of the important issues in scanning irradiation. In the developed system, the two-dimensional relative fluence and the flatness of the irradiation field were measured in a straightforward technique from the luminance distribution on the screen. The position and the size of the beams were obtained from centroid computation results of the brightness. By the good sensitivity and spatial resolution of the fluorescent screen + CCD system, the scanned ion beams were verified as the measurements at the HIMAC prototype scanning system.     

A framework for nuclear power plant emergency response system

<正>The purpose of this study is to establish an intelligent expert system for nuclear power plant emergency response.A new framework of environmental risk management methodology by the concept of pattern recognition was introduced in this paper.A knowledge-based decision support system for emergency response and risk management of nuclear power plant was also discussed.The mathematical pattern relationship of accidental release effects on neighboring area and the corresponding response measures were presented in this paper.With this decision system,the decision maker can specify the procedure and minimize their human error in the decision process.The improvement of risk response and the quality of management system could be upgraded by this system.Besides,the methodology can also be served as a basis for the future development of environmental risk response system design.     

犬骨型核石墨四点弯曲实验与模拟

核石墨是熔盐堆的关键材料之一,断裂性能是核石墨的重要属性之一。首先通过四点弯曲实验测量了犬骨型核石墨的断裂载荷,观察裂纹扩展路径再运用扩展有限单元法(Extended finite element method,XFEM)对这一实验过程进行了模拟。模拟得到的裂纹扩展路径和断裂实验结果有很好的一致性,证明利用XFEM可以准确地模拟核石墨的断裂过程。同时确定了适用于核石墨的断裂准则。