The Characterisation of an Alpha Spectrometry System using a Certificated Standard Source

Year 2021, Issue: 31, 928 - 932, 31.12.2021

Nurgül Hafızoğlu

https://doi.org/10.31590/ejosat.979887

Abstract

The calibration parameters of a high resolution two-chamber alpha spectrometer dedicated to detect alpha radiation in environmental samples were evaluated and confirmed using a certified standard source containing 237Np, 241Am and 244Cm nuclides. The resolution and efficiency characteristics for the two ion-implanted solid state detectors (ULTRA AS series) in this system were evaluated at all possible detector-source distances. The characteristics related to the performance of alpha detectors against the alpha radiation emitted from the standard source used in the measurements and the results obtained were compared in detail.

Keywords

Alpha spectrometry, Energy and efficiency calibration, FWHM, Self-absorption

Thanks

I sincerely thank my advisor Prof. Latife ŞAHİN YALÇIN and Prof. Ela GANİOĞLU NUTKU for their valuable support and contributions.

Sertifikalı Standart Kaynak Kullanılarak Alfa Spektrometre Sisteminin Karakterizasyonu

Abstract

Çevresel numunelerdeki alfa radyasyonunu tespit etmek için yüksek çözünürlüklü iki odacıklı bir alfa spektrometresinin kalibrasyon parametreleri, 237Np, 241Am ve 244Cm çekirdeklerini içeren sertifikalı bir standart kaynak kullanılarak değerlendirilmiştir ve doğrulanmıştır. Bu sistemdeki iki adet iyon implanteli katı hal dedektörünün (ULTRA AS serisi) çözünürlük ve verim özellikleri, olası tüm dedektör-kaynak mesafelerinde değerlendirilmiştir. Ölçümlerde kullanılan standart kaynaktan yayılan alfa radyasyonuna karşı alfa dedektörlerinin performansına ilişkin özellikler ve elde edilen sonuçlar detaylı olarak karşılaştırılmıştır.

Keywords

Alfa spektrometresi, Enerji ve verim kalibrasyonu, FWHM, Self-absorption.

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