核与粒子物理学术报告会 112

作者: 时间:2021-10-13 点击数:

Nuclear and Particle Physics Colloquium 112

(核与粒子物理学术报告会112)


 

Place: 沙河主楼C826

Time:  14:30, Oct. 15, 2021

Title:  Research progress of PGNAA technique: Challenges and Opportunities

Speaker:  黑大千,兰州大学中子应用技术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,研究员,兰州大学中子应用技术教育部工程研究中心。中国仪器仪表学会分析仪器分会理事、中国核学会辐照效应分会理事、国家核仪器设备产业技术创新战略联盟理事。
主要从事中子活化分析技术、X射线分析技术及核分析仪器的开发等研究工作。担任Review of Scientific Instruments, Nuclear Instruments and Method, Applied Radiation and Isotopes, Journal of Radioanalytical and Nuclear Chemistry, Nuclear Science and Techniques等SCI收录学术期刊审稿人。主持国家自然科学基金2项,主持国家重大科学仪器专项“工业物料成分实时在线检测仪器的开发和应用”项目任务1项。以技术负责人身份承担国家重点研发计划重大科学仪器设备开发重点专项“基于在线成份分析的中子管应用示范”课题1项;发表SCI收录论文60余篇,其中第一作者或通讯作者35篇,授权发明专利20余项,其中第一发明人9项。

 

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