A Novel Method for Spectrometry Based on Imaging Systems
<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>γ</mi></semantics></math></inline-formula>-ray spectrometry is a well-known technique in environmental radioactivity measurements where...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/3/1657 |
| _version_ | 1797488965439193088 |
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| author | Rita Falconi Stefania Sorbino Roberto Pani Luca Indovina |
| author_facet | Rita Falconi Stefania Sorbino Roberto Pani Luca Indovina |
| author_sort | Rita Falconi |
| collection | DOAJ |
| description | <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>γ</mi></semantics></math></inline-formula>-ray spectrometry is a well-known technique in environmental radioactivity measurements where easily handled systems are needed. Scintillators coupled to a photomultiplier tube (PMT), are typically favoured over solid-state detectors as mobile spectrometers. Replacing PMT with position sensitive devices represents an innovative solution that provides the evaluation of the interaction point of the incident radiation. The knowledge of spectrometry as a function of the depth of interaction (DoI) assures a better understanding of the spectrum and a more reliable identification of the source. In this paper, the efficiency of a simple DoI estimator has been studied using a CRY018 monolithic crystal coupled to a multi-anode photomultiplier tube. The DoI estimator has been evaluated studying charge distributions and the dependency of spectrometric properties on the DoI has been qualitatively analyzed. The estimator has shown to be highly sensitive to the DoI, enabling a better understanding of the internal interaction processes of light and an efficient rejection of the background component on the spectra. The novelty of this work lies in the application of the DoI selection in spectrometry made available by the use of MAPMT. The proposed method is practical since it does not require complicated hardware solutions or complex computational procedures. |
| first_indexed | 2024-03-10T00:09:46Z |
| format | Article |
| id | doaj.art-0ddeefaf5a4544a89868d5afaa1e0cb2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:09:46Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-0ddeefaf5a4544a89868d5afaa1e0cb22023-11-23T16:01:17ZengMDPI AGApplied Sciences2076-34172022-02-01123165710.3390/app12031657A Novel Method for Spectrometry Based on Imaging SystemsRita Falconi0Stefania Sorbino1Roberto Pani2Luca Indovina3Department of Medico-Surgical Sciences and Biotechnologies, Post-Graduate School in Medical Physics, Sapienza University of Rome, 00185 Rome, ItalyDepartment of Medico-Surgical Sciences and Biotechnologies, Post-Graduate School in Medical Physics, Sapienza University of Rome, 00185 Rome, ItalyDepartment of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 00185 Rome, ItalyDepartment of Diagnostic Imaging, Oncological Radiotherapy and Hematology, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Largo Agostino Gemelli 8, 00168 Rome, Italy<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>γ</mi></semantics></math></inline-formula>-ray spectrometry is a well-known technique in environmental radioactivity measurements where easily handled systems are needed. Scintillators coupled to a photomultiplier tube (PMT), are typically favoured over solid-state detectors as mobile spectrometers. Replacing PMT with position sensitive devices represents an innovative solution that provides the evaluation of the interaction point of the incident radiation. The knowledge of spectrometry as a function of the depth of interaction (DoI) assures a better understanding of the spectrum and a more reliable identification of the source. In this paper, the efficiency of a simple DoI estimator has been studied using a CRY018 monolithic crystal coupled to a multi-anode photomultiplier tube. The DoI estimator has been evaluated studying charge distributions and the dependency of spectrometric properties on the DoI has been qualitatively analyzed. The estimator has shown to be highly sensitive to the DoI, enabling a better understanding of the internal interaction processes of light and an efficient rejection of the background component on the spectra. The novelty of this work lies in the application of the DoI selection in spectrometry made available by the use of MAPMT. The proposed method is practical since it does not require complicated hardware solutions or complex computational procedures.https://www.mdpi.com/2076-3417/12/3/1657environmental radioactivity measurementsDoI determinationγ spectrometryimaging systemmultiple sources identification |
| spellingShingle | Rita Falconi Stefania Sorbino Roberto Pani Luca Indovina A Novel Method for Spectrometry Based on Imaging Systems Applied Sciences environmental radioactivity measurements DoI determination γ spectrometry imaging system multiple sources identification |
| title | A Novel Method for Spectrometry Based on Imaging Systems |
| title_full | A Novel Method for Spectrometry Based on Imaging Systems |
| title_fullStr | A Novel Method for Spectrometry Based on Imaging Systems |
| title_full_unstemmed | A Novel Method for Spectrometry Based on Imaging Systems |
| title_short | A Novel Method for Spectrometry Based on Imaging Systems |
| title_sort | novel method for spectrometry based on imaging systems |
| topic | environmental radioactivity measurements DoI determination γ spectrometry imaging system multiple sources identification |
| url | https://www.mdpi.com/2076-3417/12/3/1657 |
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