The chemical compositions of the Ningqiang carbonaceous chondrite matrix and a dark rim are analysed with instrumental neutron activation method.
采用仪器中子活化方法分析了宁强碳质球粒陨石基质及暗色边化学成份。
Yields of neutron generators have been measured by the iron foil neutron activation method and a long counter separately. The methods and results are given.
用铁片活化法和长计数管测量中子发生器的中子产额，给出了测量方法和结果。
In the paragraph of the method of using artificial tracer, there is the explanation about the tracer technology of neutron activation analysis and the method of Lanthanide-DTPA tracer.
在人工示踪法中叙述了中子活化示踪沙技术和稀土元素- DTPA螯合物示踪法。
A method is presented for the measurement of integrated thermal neutron flux in a high flux reactor by a Co-activation method.
本文叙述了用钴活化法测定高通量堆中热中子积分通量的方法。
The intermediate and fast neutron flux spectrum in the core of the swimming-pool reactor is measured by multiple foil activation method.
用活化箔技术测定游泳池反应堆内中能中子与快中子通量谱。
The results show that the crown ether extraction- neutron activation method can be satisfactorily applied to the separation and determination of trace rhenium in rock samples and complex systems.
研究结果表明冠醚萃取中子活化法可较好地用于岩石和复杂体系中痕量铼的分离分析。
An INAA (Instrumental Neutron Activation Analysis) method was used to determine the abundance of rare-earth elements in 58 late Palaeozoic coals and related rocks in North China.
采用仪器中子活化分析法(INAA)测定了华北晚古生代石炭纪-二叠纪58个煤及煤层夹矸和顶底板样品的稀土元素含量。
With MCNP/4B code, the influence of cut-off energy, flux tallies, nuclear databases and perturbation on the reaction rates calculation with neutron-activation method are analysed.
用MCNP／4B程序，对核活化法反应计算中的截断能量、通量计数方式、数据库、阈探测器之间的扰动等因素的影响作了分析。
With MCNP/4B code, the influence of cut-off energy, flux tallies, nuclear databases and perturbation on the reaction rates calculation with neutron-activation method are analysed.
用MCNP／4B程序，对核活化法反应计算中的截断能量、通量计数方式、数据库、阈探测器之间的扰动等因素的影响作了分析。
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