| 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. | The results of numeral simulation show that the higher - energy neutrons counting rate is quite low , it requires more counting time or much stronger low energy neutron source to detect the reliable signals
计算结果表明，核弹头裂变产生的较高能的中子数很少，需要较长的时间或较强的低能中子源才能探测到可靠的信号。 |
| 7. | If using the natural uranium to replace the heu pit in warhead , the delayed neutron counting rate would be about 3 times lower . the coincidence neutron detection is proposed to be used in nuclear warhead detection
计算表明用天然铀替代高浓铀作的假弹头，它们的出壳缓发中子数相差约3倍，需在一定条件下，才可对真伪核弹头做出判断。 |
| 8. | 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。 |
