Stability evaluation and correction of a pulsed neutron generator prompt gamma activation analysis system
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- 作者：Roman J. Shypailo
- 关键词：Body composition ; Neutron activation analysis ; Nitrogen ; Humans ; Neutron generator
- 刊名：Journal of Radioanalytical and Nuclear Chemistry
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：307
- 期：3
- 页码：1781-1786
- 全文大小：636 KB
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1. Department of Pediatrics, USDA/ARS Children’s Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street, Houston, TX, 77030, USA - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Nuclear Chemistry
Physical Chemistry
Nuclear Physics, Heavy Ions and Hadrons
Diagnostic Radiology
Inorganic Chemistry - 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
- ISSN：1588-2780
文摘
Source output stability is important for accurate measurement in prompt gamma neutron activation. This is especially true when measuring low-concentration elements such as in vivo nitrogen (~2.5 % of body weight). We evaluated the stability of the compact DT neutron generator within an in vivo nitrogen measurement system. Review of gamma event/time patterns and data from an auxiliary detector showed significant variations among repeated phantom runs. Neutron generator instability had a significant effect on measurement precision. The neutron generator used in our system must be monitored for output consistency. Adjustments must be made to measurement results to correct for generator instability.