1. Performances of a -delayed neutron detection array at Peking University
- Author
-
Lou, Jianling, Li, Zhihuan, Ye, Yanlin, Hua, Hui, Faisal, Q.J., Jiang, Dongxing, Li, Xiangqing, Zhang, Shuangquan, Zheng, Tao, Ge, Yucheng, Kong, Zan, Song, Yushou, Lv, Linhui, Li, Chen, Lu, Fei, Fan, Fengying, Li, Zhongyu, Cao, Zhongxin, Ma, Liying, and Li, Qite
- Subjects
- *
PERFORMANCE evaluation , *DELAYED neutrons , *NEUTRON counters , *PHYSICS laboratories , *COSMIC rays , *RADIOACTIVE nuclear beams - Abstract
Abstract: A -delayed neutron detection array composed of a neutron sphere and two neutron walls was constructed in the State Key Laboratory of Nuclear Physics and Technology at Peking University. Recently the performances of this detection array were largely improved and tested with a source, cosmic rays and and radioactive beams. The Tyvek 1056D paper and silicone grease were chosen for the reflection and coupling materials, respectively. For the neutron sphere with large detection solid angle ( of steradian), the intrinsic efficiency is about at a neutron energy of 1MeV and the detection threshold is about 350keV; for the neutron walls with flexible setup, these values are and 200keV, respectively. The combined array of neutron sphere and neutron walls has successfully been applied to measure the -delayed neutrons emitted from neutron-rich unstable nuclei. [Copyright &y& Elsevier]
- Published
- 2009
- Full Text
- View/download PDF