Z przyjemnością zapraszamy na nadchodzące seminarium SLCJ, które odbędzie się w środę,
25 marca 2026, o godz. 12:15 w bibliotece.
Dr Bahadır Saygı z Ankara University wygłosi wykład:
"A Photopeak-Bayesian Isotope Identifier for Radiation Portal Monitors
Using a Medium-Resolution CeBr₃ Detector"
Abstrakt:
Radioisotope Identification Devices (RID) play an essential role in
applied nuclear physics, particularly in nuclear security and safeguards,
where the rapid and reliable characterization of radioactive materials is
crucial. In real-world field conditions, however, identifying
radionuclides in real time—without relying on expert spectral
interpretation—remains challenging. Peak overlap, counting statistics, and
complex background structures often complicate the analysis of gamma-ray
spectra.
In this talk, I will describe the development and experimental validation
of an automated real-time isotope identification algorithm designed to
address these challenges. The approach combines second-derivative-based
peak enhancement with a Bayesian, photopeak-centered decision framework.
Peak detection is carried out using a Mariscotti-type method, allowing
statistically significant gamma-ray photopeaks to be identified in a
robust manner. Isotope attribution is then performed through posterior
probability estimation within a Bayesian...
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Seminarium dr. Bahadır Saygı
