Naslov
Application of a New In Situ Calibration Technique for Gamma Ray Spectrometry and Comparison of In Situ and Laboratory Measurements Taking into Account Realistic Croatian Conditions

Autori
Rašeta, Davor ; Petrinec, Branko ; Babić, Dinko ; Šoštarić, Marko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
13th International Conference of the Croatian Nuclear Society Proceedings / Vrbanić, Ivan ; Šadek, Siniša ; Trontl, Krešimir - Zagreb : Hrvatsko nuklearno društvo, 2022, S4-143-1-S4-143-8

ISBN
978-953-48100-2-6

Skup
13th International Conference of the Croatian Nuclear Society Nuclear Option for CO2 Free Energy Generation

Mjesto i datum
Zadar, Hrvatska, 05.06.2022. - 08.06.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
emergency, HPGE spectrometers, InSiCal software, radiation, radionuclide measurements

Sažetak
After a nuclear accident, it is important to quickly measure possible affected area to determine where emergency and remediation measures are needed. In situ gamma ray spectrometry was developed to quickly measure large areas of land following nuclear weapon tests and possible nuclear accidents. However, a proper calibration of detectors for in situ measurements is a long and complicated process. One tool designed to make this calibration quick is the InSiCal software. InSiCal software can shorten the in-situ calibration procedure to a single measurement (combined with calculations). We decided to investigate if the method can be implemented in Croatia, within expected constraints of emergency situations (especially time constrains). We compared in situ measurements made with two different HPGe detectors calibrated using the InSiCal software and laboratory measurements of samples collected at the same locations. Detector calibration and in situ measurements were optimized for quickness, simulating time pressure present in case of a nuclear accident. Measurements of both in-situ detectors were reasonably close – in most cases the confidence intervals overlapped. In-situ measurements generally undershot laboratory measurements. Large uncertainty intervals at energies below 100 keV make short in-situ measurements unsuitable in that energy range. If the range below 100 keV is important, the duration of the measurements must be increased. Our findings suggest that in situ gamma spectrometry using InSiCal software can provide reasonably accurate data, but some improvements may be needed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Elektrotehnika, Javno zdravstvo i zdravstvena zaštita

POVEZANOST RADA