NGD cold-neutron prompt gamma-ray activation analysis spectrometer at NIST
NGD cold-neutron prompt gamma-ray activation analysis spectrometer at NIST
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DOI：
10.1007/s10967-014-3635-7
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发表时间：
2015-04-01
影响因子：
1.6
通讯作者：
O'Kelly, Donna J.
中科院分区：
文献类型：
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作者：
Paul, Rick L.;Sahin, Dagistan;O'Kelly, Donna J.
一种新的冷中子瞬发伽马射线激活分析仪器正在设计中，这是NIST中子研究中心最近扩建的冷中子引导大厅的一部分。与将在NG7取代的PGAA仪器相比，这台仪器的中子通量增加了10倍，伽马射线和中子本底更低。在设计阶段使用了基于蒙特卡罗的模拟软件和实验装置来消除背景，同时保持较高的中子注量。与旧设备相比，新仪器还将为样品和实验设置提供更多空间。
A new instrument for cold neutron prompt gamma-ray activation analysis is being designed as part of the recent expansion of the cold neutron guide hall at the NIST Center for Neutron Research. This instrument has a 10-fold increase in neutron flux and lower gamma-ray and neutron background compared to the PGAA instrument it will replace at NG7. Monte Carlo based simulation sofware and experimental setups are used in the design phase to mitigate background while preserving high neutron fluence. The new instrument will also provide more space for samples and for experimental setup compared to the old facility.