核供热堆控制棒位置测量改进系统

本文介绍了核供热堆控制棒位置测量系统的改进方法，该系统由带触摸屏的液晶彩色图像显示器和专门的超声波电子测量系统组成，它具有可靠性好，人机对话方便，以及抗干扰能力强的特点。     

图形点阵LCD在手提式多元素X荧光仪中的应用

基于T6963C的图形点阵液晶显示器,功能低、与微机适配接口电路简单、显示方式灵活。介绍了该显示器在电致冷半导体探头手提式多元素X荧光仪应用中,汉字、下接菜单、能谱曲线等显示的编程技巧,及其与嵌入式PC104工控机的实用接口电路。     

向列相液晶中布朗运动的穆斯堡尔研究

用穆斯堡尔谱学方法研究了在向列相不同温度下ＥＢＢＡ液晶中ＦｅＳ２悬浮粒子的布朗运动,并通过等效粒子模型给出了向列相液晶中粒子扩散过程的半定量解释。     

基于单片微机的核能谱数据采集系统研究

介绍了以单片机AT89C55为控制核心的核物探能谱数据采集系统。利用单片微机系统的功耗低、可靠性高、可独立为一个简单的微机系统的特点实现了数据采集系统的微机化。该数据采集系统配有大屏幕点阵液晶显示器,按键输入,汉字人机对话,界面友好。     

核子湿度,密度计的数据处理系统

本文介绍了用于道路施工中,对土基层及沥青路面监测的核子湿度、密度计的数据处理系统。该系统是以80C31为基础的单片机结构,采用电池供电。以薄膜键盘和液晶显示器件作为输入,输出设备。数据处理系统(包括接口)重量小于0.6kg,耗电小于80mW。     

嵌入式X荧光数据处理系统的研制

论述了一种便携式X荧光数据处理系统的研制方案.该方案采用嵌入式处理器LPC2148作为数据处理核心,使用超薄320×240液晶显示器和大容量SD存储设备,可通过USB接口与PC机的数据通信.同时,对X荧光数据处理功能进行了改进.该系统运行稳定、性能可靠、操作方便,值得推广应用.     

多单片机在放射性试剂分装仪中的应用

放射性试剂分装仪通过液晶显示器和键盘实现人机交互，5个高精度的步进电机实现吸液臂的三维定位和大小针筒吸液量的控制。在整个分装系统中共用到了6片单片机，所有单片机通过串行口连接成一个相互协作的系统，实现了医用放射性试剂的高精度、零污染分装和稀释。     

新一代辐射仪——小型电子计算机化通用辐射监测器

美国洛斯阿拉莫斯研究所保健部已研制出一种电子计算机控制的、重量轻(3磅)的通用辐射探测器。它包括可同时工作的多台辐射探测器,并且使用简便。液晶显示器的数字和图像屏中可显示各种辐射参数;仪器内的电池组可使用100小时。     

甲氧基苄叉丁基苯胺液晶相变正电子湮没研究——分子自旋模型解释相变初探

本文通过对甲氧基苄叉丁基苯胺液晶相变的研究来解释这种液晶相变机理—分子自旋模 型。液晶相变测量采用正电子湮没寿命谱仪,从本实验看这种方法比示差量热法优越,其敏感参量τ_2,I_2能很好地反映液晶分子的状态。     

基于P89C669的反应堆样品照射控制装置设计

介绍反应堆中子活化自动辐照检测系统的设计和实现过程.系统采用PHILIPS公司具有ISP功能的单片机P89C669作为控制核心,通过气动传输装置控制样品进入反应堆和离开反应堆.安装在反应堆堆口处的光电传感器检测管道内的样品,精确控制样品的辐照时间和计算样品的冷却时间,并通过串行接口实现与计算机的通讯,实时向计算机传输样品辐照的信息,单片机驱动液晶显示器完成辐照时间、冷却时间的动态数据显示.     

Nuclear Data Sheets for A = 143

The evaluators present in this publication spectroscopic data and level schemes from radioactive decay and nuclear reaction studies for all nuclei with mass number A = 143. The evaluation, which includes all data received by May 2011, supersedes the 2001 evaluation by J.K. Tuli, published in Nuclear Data Sheets94, 605 (2001).     

Real time reactor noise diagnostics for the Borssele (PWR) nuclear power plant

After the upgrade of Borssele NPP in 1997, core cycle 24, the power plant operated three years more with 91% availability. The authority of the power plant decided to enhance and upgrade the reactor trend monitoring and plant information recording system with higher frequencies than the plant data processing system (PPS) as well as installing a flexible and multiple-purpose reactor noise analysis system which may support the reactor maintenance group with on-line and off-line capabilities for several different signal processing applications. Two measuring and monitoring systems were built in 2001 and fully taken in implementation during the start-up of the new core 28. In this sense, the new system was used in power operation during the 29^th of September 2001. This paper will introduce the measuring system, the operational tasks, and the results obtained so far on the real-time core-barrel motions (CBM) and the two-primary coolant pump vibrations measured through the reactor noise analysis.     

Nuclear Data Sheets for A = 116

This evaluation for A = 116 updates one by J. Blachot, (2001Bl07) published in Nuclear Data Sheets 92, 455 (2001).     

Annals of the ICRP. A report of: doses to infants from ingestion of radionuclides in mothers' milk

In the present report, ICRP provides information on radiation doses to the infant due to intakes of radionuclides in maternal milk. As in Publication 88 (ICRP, 2001) on doses to the embryo and fetus following intakes of radionuclides by the mother, intakes by female members of the public and female workers are addressed. Acute and chronic intakes are considered at various times before and during pregnancy as well as during the period of breastfeeding. Dose coefficients per unit intake by the mother (Sv/Bq) are given for the selected radionuclides of the same 31 elements for which age-specific biokinetic models were given in Publications 56, 67, 69, and 71 (ICRP, 1989, 1993, 1995a,b). For these elements, doses were calculated for the most radiologically significant natural or artificial radionuclides that might be released into the environment due to various human activities. Dose coefficients are also given in this report for radionuclides of an additional four elements: sodium, magnesium,phosphorus, and potassium. Relevant human and animal data on elemental and radionuclide transfer to milk are reviewed. The biokinetic models for adults given in earlier ICRP publications are adapted to include transfer to milk. Model predictions of fractional transfer of ingested or inhaled activity to milk are discussed in the report, and the corresponding dose coefficients for the infant are compared with dose coefficients for in utero exposure, as given in Publication 88 (ICRP, 2001). Illustrative information is also given on doses to the female breast from radionuclides in breastmilk, and external doses received by the child from radionuclides retained in the tissues of the mother. For the additional elements considered in this report, but not in Publication 88 (ICRP,2001), information is also given on doses to the embryo and fetus following maternal intakes of radioisotopes during or before pregnancy. A CD-ROM is to be issued giving data that will supplement the information given in this report. In addition to the dose coefficients given here, committed equivalent doses to the various organs and tissues of the offspring will be given. Dose coefficients will also be given for inhalation of a range of aerosol sizes for the selected radionuclides of the elements covered by this report.     

Wall conditioning strategies in the stellarator TJ-II

This paper summarizes the different wall conditioning strategies applied in the TJ-II stellarator since the operational starting in 1997. In a first stage (1997-2001) the all-metal machine (stainless steel) was conditioned by He glow discharge. This procedure allowed an acceptable density control in low power ECRH plasmas. The boronization of TJ-II (starting in 2001) led to obtain low Z plasmas with high ECRH injected power, but the density control under NBI injection was not possible. Finally, the coating of the boronized walls with a lithium thin film has allowed to obtain high reproducible NBI plasmas with good density control.     

广东省部分陶瓷产品的放射性水平

对广东省主要陶瓷产地(南海、佛山和潮州三市)的陶瓷产品中的天然放射性水平进行抽样检测，结果表明：所检测154个样品中95％的样品放射性含量指标符合国家标准GB6566-2001《建筑材料放射性核素限量》规定的A类产品标准。     

Deuteron induced gamma-ray emission method applied at a nuclear microprobe for carbon and oxygen content measurements

The deuteron induced gamma-ray emission (DIGE) method is not usually used for analytical purposes at nuclear microprobes; therefore we show here its capabilities at the microprobe facility of the Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI). In this paper the compositional analysis of magnetic spherules carried out earlier [Nucl. Instr. and Meth B 181 (2001) 557] is combined with the determination of their carbon and oxygen contents, elements which (beside nitrogen and hydrogen) play a relevant role in the study of planetary evolution and in the elucidation of the composition of cosmic parent bodies.     

Nuclear Data Sheets for A = 103

The 2001 evaluation on mass A = 103 (2001De37) has been revised, taking into account all data available before March 2009. Experimental information is presented from the neutron rich nucleus ¹⁰³Sr to the neutron deficient ¹⁰³Sn nucleus. The experimental information on excited states for ¹⁰³Sr and ¹⁰³y is very scarce New (HI, xnγ) data sets for several nuclides have been evaluated and new and more accurate data for γ intensities and multipolarities obtained. The BRICC code has been used for the calculation of conversion coefficients.     

Effect of energy loss in the simulation of slow ion scattering by a solid surface

As previously shown [B. Arezki, Y. Boudouma, P. Benoit-Cattin, A.C. Chami, C. Benazeth, K. Khalal, M. Boudjema, J. Phys.: Condens. Mat. 10 (1998) 741, K. Khalal-Kouache, A.C. Chami, M. Boudjema, P. Benoit-Cattin, C. Benazeth, Y. Boudouma, Nucl. Instr. and Meth. B 183 (2001) 279], energy spectra of scattered particles from amorphous solid surface can be deduced from angular distributions of the total path length of the projectiles. In preceding papers [K. Khalal-Kouache, A.C. Chami, M. Boudjema, P. Benoit-Cattin, C. Benazeth, Y. Boudouma, Nucl. Instr. and Meth. B 183 (2001) 279, K. Khalal-Kouache, A. Mekhtiche, A.C. Chami, M. Boudjema, Surf. Coat. Technol. 201 (2007) 8420], a model based on the transport theory was used to simulate the scattering of slow ions by a solid target. Angular distributions of the total path length were computed and compared, in absolute value, to those simulated using a Monte Carlo code. A good agreement was obtained except for the highest values of the total path length L. In the transport theory, the variation of the scattering cross section versus energy during the slowing down of the particle was not taken into account. The purpose of this contribution is to take into account this effect within the model. The obtained results are found to be in agreement with Monte Carlo computation for angular distributions of the total path length and for energy spectra of the scattered ions.     

与日本分析化学中心的氚水测量比对

1999～2001年浙江省辐射环境监测站与日本分析化学中心(JCAC)进行的流水分析比对。比对结果表明浙江监测站与JCAC的分析值比较接近，与参考值符合较好。