钚部件的中子无损测量方法

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Neutron Nondestructive Essay of the Plutonium Metal Parts

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan, 621900, China

摘要: 采用脉冲时间序列采集分析法,根据中子多重性硬件分析原理和数据解谱算法,研制了相应的数据分析处理软件,实现了裂变链中子多重性和中子衰减常数分析测量、系统参数标定、钚质量求解等功能。利用锎源对探测器、核电子学器件与脉冲序列采集器及分析软件组成的测量系统进行了测试和参数标定。采用3个不同质量的金属钚部件进行实验测量和方法验证,测量结果与样品标称值的偏差小于15%。
- 脉冲序列采集 /
- 中子多重性 /
- 中子无损测量 /
- 金属钚部件
Abstract: Based on the principle of neutron multiplicity and data unfolding mathematics,this paper developed the software which can execute the neutron multiplicity analysis,neutron attenuation analysis,parameter calibration,Pu mass solution with the neutron pulse sequence acquisition method.The measurement system consisted of detector,nuclear electronic apparatus,pulsed sequence acquisition and analysis software was tested and calibrated by californium source.Three mental plutonium components with different mass were used for experimental assay and validation,which showed that the assay bias was within 15% against the nominal value of the samples.
- Pulse sequence acquisition /
- Neutron multiplicity /
- Neutron nondestructive assay /
- Plutonium metal