{"title":"Multiple alanine pellet dosimeter: Design and first test results","authors":"Alexander Romanyukha , Jeff Delzer","doi":"10.1016/j.radmeas.2024.107201","DOIUrl":null,"url":null,"abstract":"<div><p>Existing nuclear accident dosimeters are based on the activity measurements of the neutron activation products. Those dose measurements require the use of expensive counting equipment. The other significant problem of existing accident dosimeters is that they need to be analyzed in a very short period, due to the short half-life of the activated products. The crystalline L-α-alanine is a well-known material for Electron Paramagnetic Resonance (EPR) dosimetry. It is widely used in radiation laboratories for both reference and transfer dosimetry. Alanine pellets are made from L-α-alanine powder mixed with 10–20% of a binder. The L-α-alanine pellets have ideal dosimetric properties. Alanine is sensitive to alpha, photon, and neutron irradiation. Until recently there was no way to distinguish separate dose contributions from multiple types of radiation. To overcome this shortfall, the multiple alanine pellet holder has been proposed, designed, and tested. It contains cadmium, lead, and <sup>6</sup>LiF filters. The proposed approach allows for the separation of photon and neutron dose contributions. Use of the developed holder can also reduce negative effects of humidity and direct sun light on the alanine dosimetric properties. The developed holder design can be produced by a 3D printer at a low cost. Here we present and discuss the design and test results of the multiple alanine pellet dosimeter.</p></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Measurements","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1350448724001495","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Existing nuclear accident dosimeters are based on the activity measurements of the neutron activation products. Those dose measurements require the use of expensive counting equipment. The other significant problem of existing accident dosimeters is that they need to be analyzed in a very short period, due to the short half-life of the activated products. The crystalline L-α-alanine is a well-known material for Electron Paramagnetic Resonance (EPR) dosimetry. It is widely used in radiation laboratories for both reference and transfer dosimetry. Alanine pellets are made from L-α-alanine powder mixed with 10–20% of a binder. The L-α-alanine pellets have ideal dosimetric properties. Alanine is sensitive to alpha, photon, and neutron irradiation. Until recently there was no way to distinguish separate dose contributions from multiple types of radiation. To overcome this shortfall, the multiple alanine pellet holder has been proposed, designed, and tested. It contains cadmium, lead, and 6LiF filters. The proposed approach allows for the separation of photon and neutron dose contributions. Use of the developed holder can also reduce negative effects of humidity and direct sun light on the alanine dosimetric properties. The developed holder design can be produced by a 3D printer at a low cost. Here we present and discuss the design and test results of the multiple alanine pellet dosimeter.
期刊介绍：
The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal.
Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.
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