Lindstrom R M, Mackey E A, Paul R L
Inorganic Analytical Research Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Biol Trace Elem Res. 1994 Fall;43-45:47-53. doi: 10.1007/BF02917298.
Guided beams of thermal and cold neutrons have become available to analysts at several reactors during the past decade. The very pure beams from these guides have led to lower backgrounds and higher sensitivities for prompt-gamma activation analysis (PGAA), and thus to new applications for this technique. For analytical accuracy, the details of neutron scattering within the sample need to be taken into account; this consideration is especially important for most materials of biological origin.
在过去十年中，热中子束和冷中子束已可供多个反应堆的分析人员使用。这些中子导管产生的非常纯净的中子束降低了瞬发伽马活化分析（PGAA）的本底并提高了灵敏度，从而为该技术带来了新的应用。为了保证分析精度，需要考虑样品内部中子散射的细节；对于大多数生物源材料而言，这一考量尤为重要。
