| 1. | The most useful indicator in the system is given by the neutron count of pure water samples for blank measurements .
测量系统最有用的指示是间隔测量纯水样品的中子计数率。 |
| 2. | Nuclear energy . fuel cycle technology . waste . determination of radioactive characteristics of solid waste packages by passive neutron counting
核能.燃料循环技术.废料.用无源中子计数法测定固体废料包装的放射特性 |
| 3. | Standard test method for nondestructive assay of nuclear material in scrap and waste by passive - active neutron counting using a 252 cf shuffler
使用a252cf的被动-主动中子计数法在碎片和废料中作核材料无损检定的标准试验方法 |
| 4. | Standard test method for non - destructive assay of nuclear material in waste by passive and active neutron counting using a differential die - away system
用差动衰减系统钝化-活化中子计数法对废物中的核物质进行无损分析的标准试验方法 |
| 5. | Nuclear energy - nuclear fuel technology - waste - recommendations for the calibration of an activity measurement facility of radioactive waste forms by passive neutron counting
核能.核燃料技术.废料.用无源中子计数法对放射性废料形态活性测量装置校准的推荐规范 |
| 6. | In numeral simulation of passive neutron detection , it is proposed to use the iterative calculation in analyzing the neutron multiplication in nuclear warhead . on this basis , the mass of the plutonium pit could be obtained under some conditions
在被动中子探测数值模拟中，提出在确定了核弹头的泄漏中子计数后，采用迭代方法计算中子在核弹头模型中的增殖，由此在一定条件下可实施核弹头质量属性的反演。 |
| 7. | The method of numeral simulating the coincidence neutron detection is proposed with combining the neutron transportation and probabilistic calculation . the method is introduced and used to simulate the nuclear warhead induced fission by source neutrons with energy below 1 mev
推导并提出用中子输运计算与概率方法结合计算符合中子计数，对能量低于1mev的外源中子照射核弹头诱发裂变的符合中子测量作了数值模拟。 |
| 8. | The results show that coincidence detection method has obvious benefit in detecting nuclear warheads . for the same type warhead , the coincidence counts rates of the model of warhead of heu pit is 10 times as big as that of fake warhead of natural uranium pit . if we know the nuclear warheads configuration by other methods , the method of coincidence neutron detection could be used to distinguis h the fake nuclear warheads from the reals
计算表明用探测符合中子的方法探测核弹头对区分真假核弹头有明显的优点，对于同一核弹头模型，裂变弹芯是高浓铀和用天然铀替代高浓铀时，符合中子计数相差1个量级，如通过其他途径了解核弹头的大致结构，符合测量的方法就可以有较高的置信度分辨真假核弹头。 |
| 9. | The simulation can be divided into three processes sequentially : calculating the induced fission neutron rate of uranium and space distribution by mam - li neutron source , computing the total uranium fission neutron count rate and time distributions of 42 3he tubes , and calculating the neutron coincidence counting rate
第一步，以ain ? li源为中子源，计算铀的诱发裂变中子产生二率及空间分布；第二步，以铀的诱发裂变中子为中子源，计算化根’ ne管的总中子计数率及时间分布；第三步，计算中子符合计数率。 |
