子体

从实验入手，应用高灵敏度、高精度、静态、易于重复观测的CD－1α杯测氡方法，在室内较理想条件下，研究了氡及其子体自身固有的运移规律。

This paper studies the migration rule of radon and its daughter under laboratory conditions through experiments by using high sensitive and precise , static , easily repeated CD 1 α cup method to survey radon .

它是一种借助于经过加压极化处理过的聚酯薄膜片收集氡衰变产生的子体218Po（RaA），并测量其放出的α射线强度的微机测氡仪。

The working principle of the instrument is based on the measurement of Q-ray intensity generated by 218Po ( RaA ) - the radon daughter collected on polyester film processed by pressurized polarization .

不允许在将NC头作为子体的对象开始删除目录树。

Tree deletions starting at an object which has an NC head as a descendant are not allowed .

室外~（220）Rn及子体的浓度取决于土壤中~（232）Th的含量。

Rn and its progeny concentrations depend on the content of Th in soil .

环境中~（220）Rn子体的累积测量

Integrating measurement of ~ ( 220 ) RN progeny in the environment

在衰变过程中，铀及其衰变子体放射出γ射线和特征X射线，通过能谱分析可以求出它们的峰面积和相对探测效率。

Uranium isotopes and their daughters emit - rays and X-rays during the decay process , their peak area and relative efficiency can be calculated through spectrum analysis .

关于室内~（220）Rn及其子体浓度的讨论

Discussion on indoor concentration of ~ ( 220 ) rn and its progeny

吸入短寿命氨子体有效剂量当量的计算及ALI和DAC的导出

Calculation of effective dose equivalent and derivation of Ali and DAC by inhalation of short-lived radon daughters

~（201）Pb经电子俘获衰变的反冲子体~（201）Tl氧化态的研究

Study of the oxidation state of recoiled ~ ( 201 ) tl after the EC decay of ~ ( 201 ) pb

对理想条件下Rn及其子体垂直运移实验数据的再分析

Re-analysis of the experiment data of vertical migration of radon and its daughters under ideal condition

本文运用一维扩散模型分析了室内220Rn及其子体浓度的分布规律，讨论了室内220Rn与其子体的平衡因子F的性质和变化规律。

The distribution of indoor thoron and its progeny concentration was derived from a theoretical model of one-dimensional diffusion . And the characteristics of their equilibrium factor F were studied .

狗经氡子体暴露后血、毛中~（210）Pb和~（210）Po含量的动态变化

Study on dynamic changes of ~ ( 210 ) po and ~ ( 210 ) pb in blood and hair dogs after exposure to radon daughters

北京房山区两座煤矿~（222）Rn、~（220）Rn及其子体的测量

Survey of radon , thoron and its decay products in two coal mines in Fangshan area of Beijing

铀矿和某些非铀矿山的矿工往往受到较高浓度的~（222）Rn及其子体的照射。

Abstract Underground uranium miners and other miners are exposed to ~ ( 222 ) Rn and its daughters .

由骨骼中~（210）Pb含量估算~（222）Rn子体摄入量的方法

A method for estimating ~ ( 222 ) rn daughters potential α - energy intake from the content of ~ ( 210 ) pb in bone

空气中~（222）Rn/~（220）Rn子体水平的α能谱法测量

The Alpha Spectrum Method for Measuring ~ ( 222 ) Rn / ~ ( 220 ) Rn Progeny Concentrations in Air

对荧光涂料激发能源~（147）Pm的生殖毒性进行了研究，观察到胎盘对~（147）Pm进入子体有明显的屏障作用。

The germ toxicity of exciting energy resource 147Pm of fluorescent paint was studied . It was shown that the placenta was a barrier for 147Pm entering into the fetus .

锶-90的含量通过HNO3-HDEHP-甲苯体系中溶剂萃取子体产物钇-90而获得。

Strontium-90 is estimated by solvent extraction of the daughter product yttrium-90 in the system HNO_3-HDEHP-toluene .

室内外220Rn子体浓度分别为2.7和0.8EECBq·m-3。

220 progeny concentrations in indoors and outdoors are 2.7 and 0.8 EEC Bq · m-3 , respectively .

对吸入氡子体的家兔，通过体外γ计数测量，观察RaB从其肺内的清除速率。

Re-moval of RaB from the lung of rabbits inhaled radon daughters was followed by external γ - counting .

ICRP新剂量限值对氡子体职业性照射年照射量限值影响的探讨

Study of influence of ICRP NEW dose limit on annual limit on exposure for occupational exposure to radon progeny

阳江高本底地区室内空气中~（222）Rn、~（220）Rn子体水平的一些调查和分析

Survey on indoor ~ ( 222 ) rn , ~ ( 220 ) rn progeny in air in high background radiation area of yangjiang , china

ZerbstC-t法确定少子体产生寿命的误差分析

Analysis Error in Minority Carrier Bulk Generation Lifetime Determined by Zerbst 's C-t Method

结论CN径迹法可有效地测量氡子体对地面等的沉积率，本研究所采用的累积法也是测量平均fA值和粒子沉积速度的有效手段，从而有可能使肺剂量的评价精度得到提高。

Conclusion The CN bare method is good for the measurement of the deposition rate of natural radioactive particles from atmosphere , thereby possibly advancing the precision of the evaluation of the lung dose .

本文介绍了用高纯锗γ谱仪测量铀矿样品中与~（231）Pa处于平衡状态的某些子体的γ放射性，从而确定~（231）Pa含量的方法。

This paper introduces the determination of gamma radioactivity of some daughter elements in equilibrium with ~ ( 231 ) Pa in uranium ore samples by gamma-ray spectrometer with high purity germanium in order to determine the ~ ( 231 ) Pa content .

用~（241）Am标准源和加拿大Pylon公司的氡子体标准源对谱仪进行了探测效率测定，并对两种刻度方法存在的误差进行了分析。

The detecting efficiencies of the alpha spectrometer are measured by using ~ ( 241 ) Am alpha standard source and radon progeny standard source of Canada Pylon Company and the differences between the two methods are analyzed .

随着密封时间的增加，氡及其子体与其母体核素之间相对平衡率增加，20d后达到放射性平衡。

The balance rate compared radon and its daughter nuclide with their mother nuclide is increased along with the remain-time extending , and reaches balance fully up to about 20 days .

方法根据氡及其短寿命子体218Po（RaA）和214Po（RaC）之间的关系，建立了一种闪烁室测量氡及其子体释放的α粒子的探测效率的三段法。

Methods A three - counts method of measuring scintillation cell detection efficiency to a particles emitting from radon and its progeny were developed on the relationship of radon and its progeny .

给出了一种考虑子体影响的放射性剂量评价方法，并用此法对铀尾矿中234U通过地下水迁移对人体所致剂量进行了估算。

A dose assessment method considering the effect of progenies is presented in this paper , and the dose from ~ ( 234 ) U is evaluated using this method .

附近居民通过尾矿库所增加的年有效剂量当量，氡子体为2.1×10~（-2）mSv，γ辐射为5.6×10~（-2）mSv，两者之和约为广大居民的年限制剂量当量的7.7%。

The additional annual effective dose equivalent to the nearby residents is 2.1 × 10-2 mSv from radon daughters and 5.6 × 10-2 mSv from γ radiation . The sum is about 7.7 % of the dose limit for the public .