中法核工程与技术学院第96期学术午餐会

中法核工程与技术学院第96期学术午餐会

96^th Academic Lunch Seminar of Sino-French Institute of Nuclear Engineering and Technology

Topic: Radon Exhalation from Soil and Atmospheric Radon Progeny Measurement

Speaker: Dr. Jinmin YANG

Time: 12:40 – 14:00, Friday November 23, 2018

Venue: F309 in the teaching building, Zhuhai Campus, SYSU

Organizer: Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University

Language: English

Abstract:

Radon is a naturally occurring inert gas and distributed in the atmosphere all over the world. Radon and its progeny are the primary contributor of natural ionizing radiation dose to the general population. The internal exposure caused by radon and its progeny is the second cause of lung cancer.

In this talk, I will present my research work about radon from two aspects: 1) Radon exhalation from the soil. It is the major source of atmospheric radon and of great importance for atmospheric radon concentration evaluation. A two years long continuous measurement of radon exhalation from soil was carried out based on an automatic measurement system and a fitting model was established for the simulation of radon exhalation. 2) Atmospheric short-term lived radon progeny measurement. This is important for the application of radon progeny as a tracer utilized in atmospheric science. A step-advanced monitor for radon progeny was developed. The low detection limit and high detection sensitivity make the device suitable for the continuous atmosphere monitoring.

About the speaker:

Dr. Jinmin YANG, a postdoctoral researcher at IFCEN, received his bachelor and Ph.D. degree from the school of Physics, Peking University. During his Ph.D., he stayed in the Helmholtz Center Munich (German Research Center for Environmental Health) for two years. His research area is focused on radiation protection.