Nuclear and Particle Physics Colloquium 112

(核與粒子物理學術報告會112)

Place: 沙河主樓C826

Title:  Research progress of PGNAA technique: Challenges and Opportunities

Speaker:  黑大千，蘭州大學中子應用技術教育部工程研究中心

Abstract:

As one of the most important research interests in the field of nuclear science and technology, Neutron Activation Analysis (NAA) technique is an effective nuclear analysis technology, playing an important role in the nuclide identification. Compared with the other elemental analysis techniques, NAA technique has the characteristics of high analytical accuracy and strong capacity of anti-interference, and has been widely used in geochemistry, cosmic science, environmental science and many other fields. Moreover, as one of the important branches in NAA, Prompt Gamma Neutron Activation Analysis (PGNAA) technique also has the advantages of high sensitivity, non-destructive inspection and non-essential sample pretreatment, and it can meet the needs of online, in-situ and bulk sample analysis, etc. Because of its different nuclide sensitivity with that of NAA technique, PGNAA can be the complementary to NAA in nuclide analysis and practical application.
In recent years, with the development of other analytical methods and instruments, NAA technique was greatly challenged. However, it still plays an irreplaceable role in detecting the internal components of bulk sample. Relying on the large scientific facilities such as reactors and spallation neutron sources, many researches have been carried out by worldwide institutes (UK, Germany, Hungary, etc.), including the detection of trace elements in alloy and the internal elements distribution in cultural relics, etc. In order to take full advantage of PGNAA technique and expand its application fields, the in-situ online detection based on low-yield neutron sources becomes highly valued, and many researches have been carried out in traditional fields such as all-element logging and industrial material composition analysis, etc., as well as the emerging fields such as nuclear waste barrel testing and heavy metal analysis in environment. Face to the new requirements, some new scientific problems also need to be solved, for example, the nonlinear response of analytical information, design criteria for PGNAA device, extended application, etc., which provide the new challenges and opportunities for the development of PGNAA technique.

About Speaker:

黑大千，男，博士，研究員，蘭州大學中子應用技術教育部工程研究中心。中國儀器儀表學會分析儀器分會理事、中國核學會輻照效應分會理事、國家核儀器設備産業技術創新戰略聯盟理事。
主要從事中子活化分析技術、X射線分析技術及核分析儀器的開發等研究工作。擔任Review of Scientific Instruments, Nuclear Instruments and Method, Applied Radiation and Isotopes, Journal of Radioanalytical and Nuclear Chemistry, Nuclear Science and Techniques等SCI收錄學術期刊審稿人。主持國家自然科學基金2項，主持國家重大科學儀器專項“工業物料成分實時在線檢測儀器的開發和應用”項目任務1項。以技術負責人身份承擔國家重點研發計劃重大科學儀器設備開發重點專項“基于在線成份分析的中子管應用示範”課題1項；發表SCI收錄論文60餘篇，其中第一作者或通訊作者35篇，授權發明專利20餘項，其中第一發明人9項。