Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 39: Computing II

HK 39.7: Talk

Wednesday, March 30, 2022, 15:30–15:45, HK-H5

Simulation Method for Calculating the Summing Effect Correction Factor — •Yanzhao Wang, Jan Mayer, Felix Heim, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics, 50937 Cologne, Germany

γ-ray spectrometers have been utilized to investigate the radioactive properties of either activation or in-beam experiments since decades. One of the main problems undermining the measurement accuracy is called coincidence summing, which occurs when multiple γ-rays have energy depositions at the same detector almost simultaneously [1]. To offset this effect, correction factors on the initial γ-ray countings are calculated using the Geant4-based Monte Carlo simulation of consecutive emissions from all possible γ-ray cascades in the decay scheme. Compared to traditional analytical methods, the method presented in this talk does not only simplify the calculating procedure in case of complex decay schemes, but also is more accurate with the consideration of the Compton scattering in the detector volume.
Supported by the BMBF (05P21PKFN1).
[1] T.M. Semkow et al., Nucl. Instrum. Methods Phys. Res. A 290 (1990) 437