A New Algorithm for Spectral Drift Calculation in a Gamma-Ray Spectrometer

Zhang, Qin; Ge, Lijia; Wu, Qi Fan; Cheng, Jian

doi:10.4028/www.scientific.net/amr.346.705

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…A spectrum process is required to correct the significant effect of temperature on scintillators. The methods employed are needed to return shifted and recorded spectrums to their reference spectrums [18]. This helps to eliminate the effect of temperature variation when taking readings.…”

Section: Jinst 17 P05041mentioning

confidence: 99%

Radioactive source strength effect on gamma radiation monitoring with a NaI (Tl) scintillation detector

et al. 2022

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The accurate monitoring of gamma radiation doses in the environment has become essential due to its effect on human health. In this study, the temperature dependence of NaI (Tl) scintillation detectors based on the daily/annually measured dose rate in the environment as well as the importance of selecting the appropriate radioactive source strength when calibrating NaI (Tl) detectors for gamma radiation monitoring were investigated. The temperature correction coefficients discovered during the calibration of the BDKG-03 detector by Atomtex were verified, and whether the time duration of the measurement interval has an effect on readings of gamma radiation was also investigated in the city of Tomsk. NaI (Tl) scintillation detectors were used to monitor the gamma background radiation in the environment. The detectors were calibrated with both high and low radioactive sources to obtain a temperature correction coefficient in order to stabilize the influence of temperature change on the detector at different time intervals. This was used to study the correlation between the daily and annual dose rates of low gamma background radiation. The results showed that there was a shift in the spectrum of the daily and annual dose rates calculated using the algorithm obtained when the detector was calibrated with a highly radioactive source to the position of the constant coefficient for low-level dose. However, the ones obtained when the detector was calibrated with a low radioactive source and that of the constant coefficient for a low-level dose overlapped each other. This demonstrated that the type of radioactive source used in detector calibration during manufacture has an effect on the temperature correction coefficient, which in turn has an effect on the accuracy of the ambient dose rate when used to monitor gamma radiation. The duration of the time interval for measurement was found to be very important since it has an effect on dose rate readings.

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Section: Jinst 17 P05041mentioning

confidence: 99%

Radioactive source strength effect on gamma radiation monitoring with a NaI (Tl) scintillation detector

et al. 2022

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“…All of correction methods are related to restoring a shifted spectrum recorded under different temperatures to the position of a reference spectrum which allows the restored spectrum to be processed together with the reference spectrum [13], hence eliminating the effect of the change of temperature between their measurements [5,6,9]. The essential condition for spectrum converting methods is the linearity of the overall system that allows to perform linear operations.…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of NaI(Tl) Radiation Scintillation Detectors’ Characteristics

Csurgai

Padányi

Földi

2020

AiMT

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Scintillators belong to the oldest types of radiation detectors. Nowadays, for spectrometric purposes the use of semiconductive detectors is more common, but scintillation detectors are still in use for various specific measurement purposes. We have investigated the dependence of a gamma spectrum measured by NaI(Tl) scintillation detector on temperature changes. We examined the need of energy or efficiency recalibration and software compensation. Due to temperature dependence, scintillation detectors require energy recalibration before environmental and outdoor measurements or before the use of etalon sources for obtaining spectrum for follow-up calibration. We have elaborated on a simple method for energy recalibration of scintillation detectors at different temperatures. This method was converted into an algorithm and it can be either burned into instrument EPROM or used in software processing.

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Characterisation of scintillator-based gamma spectrometers for determination of sample dose rate in OSL dating applications

Bu¹,

Murray

Kook³

et al. 2018

Radiation Measurements

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A New Algorithm for Spectral Drift Calculation in a Gamma-Ray Spectrometer

Cited by 4 publications

References 8 publications

Radioactive source strength effect on gamma radiation monitoring with a NaI (Tl) scintillation detector

Radioactive source strength effect on gamma radiation monitoring with a NaI (Tl) scintillation detector

Temperature Dependence of NaI(Tl) Radiation Scintillation Detectors’ Characteristics

Characterisation of scintillator-based gamma spectrometers for determination of sample dose rate in OSL dating applications

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