助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   radiochemical 在 核科学技术 分类中 的翻译结果: 查询用时:0.008秒
图标索引 在分类学科中查询
所有学科
核科学技术
特种医学
环境科学与资源利用
更多类别查询

图标索引 历史查询
 

radiochemical
相关语句
没有找到相关双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  radiochemical
Functional activity of blood cells in fish exposed to radiochemical industrial sewage
      
The effect of the gas components of the working medium, which develops during the reprocessing of waste nuclear fuel at radiochemical plants, on the 129I fluorescence excited by radiation of He-Ne laser (633 nm) is studied.
      
The results were compared to the data obtained using radiochemical separation.
      
This instrument can measure 241Am activity in samples, without their concentration and radiochemical treatment, against a high (~10-3) background level due to the accompanying radionuclides (134Cs, 137Cs, 154Eu, 155Eu, etc).
      
A Radiochemical Installation for Handling Small Amounts of High-Purity Gases
      
更多          


The cumulative yields of 95Zr, "Mo, 103Ru, 106Ru, 144Ce and 147Nd in the fission of 238U induced by neutrons of 14.9 MeV were determined absolutely by radiochemical method. The 14.9±0.46 MeV neutrons were produced in the T (D,n)'He reaction using the 600kV Cockcroft-Walton type accelerator. The neutron flux varied between 2×109 and 1010 neutrons/sec. In this work the natural uranium was used as material of sample and standard targets. The standard targets were prepared by molecular plating and the sample...

The cumulative yields of 95Zr, "Mo, 103Ru, 106Ru, 144Ce and 147Nd in the fission of 238U induced by neutrons of 14.9 MeV were determined absolutely by radiochemical method. The 14.9±0.46 MeV neutrons were produced in the T (D,n)'He reaction using the 600kV Cockcroft-Walton type accelerator. The neutron flux varied between 2×109 and 1010 neutrons/sec. In this work the natural uranium was used as material of sample and standard targets. The standard targets were prepared by molecular plating and the sample targets were uranium metal disks with masses ranging from 1.5 to 3 gramms. The absolute fission rate of the sample target was measured by double fission ionization chamber.The irradiated targets were dissolved, and carriers of each element were added. By means of modified standard radiochemical procedures the above mentioned nuclides were separated, purified and mounted. The radioassay of radionuclides separated from the sample was carried out by using two types of detectors, namely, a low background counter for β-counting, and Nal(Tl) crystal detector coupled with a single channel analyzer for γ-counting. Both of the detectors were calibrated by 4π/β-γ coincidence counting.The cumulative yields determined by the above mentioned method are listed in following table. The errors given in the table are total errors including statistical and systematic errors. The yield values of this work are found to be in good agreement with most reported yields within error limits.

本文叙述了用放化方法测定14.9MeV中子诱发~(238)U裂变时的裂变产物~(95)Zr,~(99)Mo,~(103)Ru,~(106)Ru,~(144)Ce和~(147)Nd的绝对累计产额,其结果分别为(4.96±0.22)%,(5.44±0.20)%,(4.75±0.23)%,(2.51±0.13)%,(4.01±0.21)%和(2.13±0.11)%。裂变率是用双裂变室测量的,裂变产物核的衰变率用经4πβ-γ符合法刻度过的低本底2πβ卢和NaI(T1)测量仪测定。

During operation of the reactor it had been failed of fuel elements in-pile ofpressurized water test loop.The ion-exchange resin beds were used to Purify thewater of the test loop for 600 hours,the pH value could been controlled in therange of 9.5—10.5,the decontamination factor was decreased to 6 from 45.Themixed ion-exchange rasins were separated into two components with the system ofthe mixed solvent of acetone-carbon tetrachloride,the residual exchange capacity andrecoverable exchange capacity of the cation...

During operation of the reactor it had been failed of fuel elements in-pile ofpressurized water test loop.The ion-exchange resin beds were used to Purify thewater of the test loop for 600 hours,the pH value could been controlled in therange of 9.5—10.5,the decontamination factor was decreased to 6 from 45.Themixed ion-exchange rasins were separated into two components with the system ofthe mixed solvent of acetone-carbon tetrachloride,the residual exchange capacity andrecoverable exchange capacity of the cation and anion exchange resin were deter- mined respectively.The concentration of the lithium,iron,ammonium and spec-troscopic analysis of the elution solution of the cation exchange resin were deter-mined.The concentration of CO_3~-,HCO_3~-,SO_4~- and Cl~- of the elution solution ofthe anion exchange resin were determined respectively.The fission productCesium-137 and Iodine-131,which adsorped in the ion-exchange resin,wereanalysed by radiochemical method.All data of measurement from the top of theion-exchange resin bed to the bottom were mono-disperse,it had been expressedthat the ion-exchange resin beds were un-effective,

反应堆内试验压水回路在运行期间曾发生燃料元件破损,离子交换树脂柱投入净化的600小时之内,回路水的 pH 值能自动控制在9.5—10.5范围,去污因子从45降到6。对树脂柱分七段取样,混合树脂经丙酮-四氯化碳体系分离,分别测定阳、阴树脂的剩余交换容量和可恢复交换容量;测定阳树脂淋洗液中锂、铁和氨,并作光谱分析;测定阴树脂淋洗液中碳酸根、碳酸氢根、硫酸根和氯离子;对裂变产物碘-131和铯-137作放射化学分析。各种测量数据从交换柱顶到柱底呈均一分布,表明离子交换树脂柱已失效。

The fission yields of 38 mass chains are measured using radiochemical method as well as direct Ge (Li) γ spectrometry. The fission yields are reported for the first time for mass chains 85, 87, 88, 101, 125, 128, 138, 153 and 161. The yields measured make up 114.4% of the total 200% expected from fiission. A fine structure exists at A = 134 and a small fine structure at A = 101-103. Under the light and heavy peak the total yields are both 100.1%. The peak widths taken at half maximum are 16.7 and 15.8...

The fission yields of 38 mass chains are measured using radiochemical method as well as direct Ge (Li) γ spectrometry. The fission yields are reported for the first time for mass chains 85, 87, 88, 101, 125, 128, 138, 153 and 161. The yields measured make up 114.4% of the total 200% expected from fiission. A fine structure exists at A = 134 and a small fine structure at A = 101-103. Under the light and heavy peak the total yields are both 100.1%. The peak widths taken at half maximum are 16.7 and 15.8 mass units, and the average mass numbers are 97.5 and 139.3 for the light and heavy peak respectively. The ratio of peak to valley is 179 (99Mo/115A).

本文叙述了用放化法和Ge(Li)直接γ能谱法测量3MeV中子诱发~(238)U裂变的裂变产额。测得了38个核素的产额值,其中9个核素的产额尚未见文献报道。用实验值描绘出的质量-产额曲线下的总产额为200.2%。在重峰A=134处存在精细结构峰,在轻峰A=101-103处观测到一小峰。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关radiochemical的内容
在知识搜索中查有关radiochemical的内容
在数字搜索中查有关radiochemical的内容
在概念知识元中查有关radiochemical的内容
在学术趋势中查有关radiochemical的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社