Multi-coincidence set-up for nuclear forensics with Si-strip and Compton-suppressed HPGe detectors

Summary, in English

A radiation detection system combining a single-sided silicon strip detector (SSSD) and a high-purity germanium (HPGe) COMPEX detector module together with its anti-Compton shield (ACS) was set up at Lund University for environmental sample measurements. This system enables high sensitivity ––-coincidence analysis, enhancing the identification level of radionuclides in environmental samples. A comprehensive multi-coincidence data acquisition system was implemented for optimal signal readout. The proof of principle is demonstrated using a real environmental filter sample containing traces of radionuclides from the 232Th natural decay chain.

• Author: Yuliia Hrabar; Pavel Golubev; Solveig Englund; Dirk Rudolph; Luis Sarmiento Pico; Kristina Eriksson Stenström
• Department/s: Particle and nuclear physics; LTH Profile Area: Aerosols; MERGE: ModElling the Regional and Global Earth system
• Publishing year: 2025-11-04
• Language: English
• Publication/Series: Journal of Environmental Radioactivity
• Volume: 291
• Links: https://www.sciencedirect.com/science/article/pii/S0265931X25002243; http://dx.doi.org/10.1016/j.jenvrad.2025.107837
• Document type: Journal article
• Publisher: Elsevier
• Topic: Subatomic Physics; Environmental Sciences
• Keywords: Si-strip detector; Compton-suppressed HPGe detector; Multi-coincidence; Environmental sampling; Aerosol filter samples; 232Th decay chain
• Status: Published
• Project: Nuclear Forensics with a Multi-coincidence Radiation Detector Set-up
• ISBN/ISSN/Other: ISSN: 1879-1700