Detection of Fissioning Materials Using a Neutron Source Based on a Compact Betatron
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- 作者：V. M. Golovkov ; V. L. Chakhlov and M. M. Shtein
- 刊名：Atomic Energy
- 出版时间：2004
- 出版年：2004
- 期刊代码：8_10634258
- 类别：mt
- 卷：96
- 期：2
- 页码：127-132
- 数据来源：sp
摘要
The possibility of using a neutron source based on a 10 MeV compact betatron and 1 kg heavy water or 3.3 kg beryllium in the betratron bremsstrahlung beam is investigated. The 235U detection limit in a 358 mm in diameter and 782 mm high container with probability 0.997 in an experimental apparatus with one epithermal-neutron detector is 40 mg with exposure 10 min. Increasing the mass of the neutron target to 10 kg heavy water and the number of neutron counters to 25 could decrease the 235U detection limit to 3 mg. A neutron detector based on a compact betatron can be expected to give 235U detection sensitivity 10–8 g/g.