CTBT: Science and Technology Conference 2025 - SnT2025

Temporal and Geographical Distribution of CTBT-Relevant Xenon Isotopes: Insights into Global Background Patterns

P2.3-322

Not scheduled

1h

Zeremoniensaal

E-poster T2.3 Atmospheric and Subsurface Radionuclide Background and Dispersion P2.3 Atmospheric and Subsurface Radionuclide Background and Dispersion

Speaker

Prof. Mohammed Yehia Taha Ahmed Elbahrawy (National Research Institute of Astronomy and Geophysics (NRIAG))

Description

The detection of xenon isotopes in the atmosphere plays a critical role in monitoring nuclear explosions under the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Understanding the temporal and geographical distribution of CTBT-relevant xenon isotopes, such as 131mXe, 133Xe, 133mXe, and 135Xe is essential for distinguishing between natural, medical, and anthropogenic sources and potential nuclear tests. This study provides a comprehensive analysis of global background levels of these isotopes, integrating data from atmospheric monitoring stations, and meteorological data. Key findings reveal significant variability in xenon isotope concentrations. Temporal fluctuations, including seasonal and diurnal cycles, are analyzed to better understand their correlation with atmospheric transport dynamics. The results contribute to refining the detection thresholds and improving discrimination methods for treaty verification purposes.