球腔内超热与热中子计数比小于10%，计数率依赖于热中子探测器所在位置。
Inside the sphere cavity, the ratio of ultra thermal neutron counting rate to thermal one is less than 10%, but the counting rates slightly depend on the position of thermal neutron detector.
测量了角响应、径向微分响应、能量响应及球腔内中子计数率分布，并估算了有效中心。
The angular response, the radial differential response, the energy response and the distribution of neutron counting rate inside sphere cavity are measured, and the effective centre is estimated.
文章介绍了用缓发中子计数法测铀时遇到的一些影响测量结果准确度的因素和采用的解决办法。
Some factors affecting the accuracy of uranium content determined by delayed neutron counting and methods to solve the problems are reported.
利用常规仪器（堆控制室中的启动装置）测得反应堆中稳定的中子计数率来刻度控制棒的反应性当量。
The steady counting rates of neutron in reactor are measured by a conventional instrument(the start-up devices)to calibrate reactivity worth of a control rod.
中子符合计数在核材料认证和管理中有着广泛的应用。
Neutron coincidence counting is widely used in the authentication and management of nuclear material.
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。
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.
本文叙述了应用于控制压水反应堆反应性的中子吸收法测量硼浓度原理，介绍了硼浓度的测量方法，并对硼浓度与计数率的关系曲线进行了测量。
This paper discusses the neutron absorption principle of measuring the boron concentration, which is to control the reactivity of the pressurized-water reactor.
推导出典型几何计数器中子探测效率及热能谱修正系数。
The detection efficiencies of typical slow neutron proportional counters and the correction coefficients for Maxwell spectra are deduced.
本文介绍了对脉冲中子辐射场探测和一种可以防止漏计数又可实时监测的中子探测器的研究。
A new type of neutron detector which can avoid counting loss and carry out real-time measurement for pulsed neutron field will be introduced in the paper.
这些结论丰富了中子测井仪器自身条件变化对计数影响的相关理论，为仪器优化设计提供了理论依据和有效工具。
These conclusions have enriched the theory a-bout effects caused CNL tool's changes on the detectors' count rates, thereby providing theory warrant and effective means for optimum design of CNL tools.
本文介绍了一种高灵敏度中子监测器，它对天然中子本底的计数率约每分钟20次计数。
A high sensitive neutron monitor is described in this paper. It has an approximate counting rate of 20 CPM for natural background neutrons.
固体径迹火花自动计数器用于中子学参数实验中裂变率的测量时，其关键部件转换靶是贫化铀和浓缩铀镀片，该镀片用电镀法制备。
Solid track spark auto counter was always used to measure fission rate in neutron character experiment, the key part-transform target is plating (depleted Uranium and enriched Uranium).
固体径迹火花自动计数器用于中子学参数实验中裂变率的测量时，其关键部件转换靶是贫化铀和浓缩铀镀片，该镀片用电镀法制备。
Solid track spark auto counter was always used to measure fission rate in neutron character experiment, the key part-transform target is plating (depleted Uranium and enriched Uranium).
应用推荐