The chemical compositions of the Ningqiang carbonaceous chondrite matrix and a dark rim are analysed with instrumental neutronactivationmethod.
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。
2
Yields of neutron generators have been measured by the iron foil neutronactivationmethod 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。
3
The results show that the crown ether extraction- neutronactivationmethod can be satisfactorily applied to the separation and determination of trace rhenium in rock samples and complex systems.