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Random source interrogation system

阅读:114发布:2023-05-10

专利汇可以提供Random source interrogation system专利检索,专利查询,专利分析的服务。并且A system to assay fissionable material comprising a sample container, a neutron source of americium-lithium, lead shielding, a plastic scintillator neutron detector using fast photomultiplier tubes electrically connected to a coincidence logic system, and rotating the sample by any well known means along with varying the position of the said neutron source.,下面是Random source interrogation system专利的具体信息内容。

1. An improved random interrogation system to assay fissionable material having a sample container, a means of rotating the sample, a random neutron source located inside the system that scans the sample, at least two fast neutron plastic scintillation detectors with a gamma ray shield of lead combined with a 3He flux monitor, a fast neutron reflector of steel housing the said system and a second steel shield that is interposed between the said source and detectors, and a coincidence logic system electrically connected to said detectors by means of fast photomultiplier tubes, said improvement comprising an absorbing thermal neutron shield, and the neutron source being less than 1 MeV for the assay of fissile isotopes and greater than 1 MeV for fertile isotopes.
2. The interrogation system of claim 1 in which the said thermal neutron shield is a plate of boron approximately one-fourth inch thick.
3. The interrogation system of claim 1 in which the said neutron source for the assay of fissile isotopes is selected from the class consisting of AmLi and PoLi.
4. The interrogation system of claim 1 in which the said neutron source for the assay of fertile isotopes is selected from the class consisting of AmB and AmF.
5. The interrogation system of claim 3 in which the said neutron source is AmLi.
6. The interrogation system of claim 4 in which the said neutron source is AmB.
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