{"title":"A lightweight shield-detector combination for use in hard X-ray telescopes","authors":"H. Griffiths , R.R. Hillier","doi":"10.1016/0167-5087(84)90281-3","DOIUrl":null,"url":null,"abstract":"<div><p>By coupling a simple, passive shield of tin with a thin NaI (Tl) detector the atmospheric background counting rate in the energy range 15–95 keV can be attenuated by a factor of approximately 12.5. Including the weight of the collimator, a telescope built with this combination would have a total surface density of only ∼ 3 g cm<sup>−2</sup>, allowing a sensitive area of ∼ 30 m<sup>2</sup> to be constructed within the normal restrictions of weight on a balloon experiment. To measure the of effectiveness of different types of shielding, the atmospheric gamma radiation was simulated using a tank of water containing radioactive sources.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 2","pages":"Pages 418-421"},"PeriodicalIF":0.0000,"publicationDate":"1984-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)90281-3","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments and Methods in Physics Research","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0167508784902813","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
By coupling a simple, passive shield of tin with a thin NaI (Tl) detector the atmospheric background counting rate in the energy range 15–95 keV can be attenuated by a factor of approximately 12.5. Including the weight of the collimator, a telescope built with this combination would have a total surface density of only ∼ 3 g cm−2, allowing a sensitive area of ∼ 30 m2 to be constructed within the normal restrictions of weight on a balloon experiment. To measure the of effectiveness of different types of shielding, the atmospheric gamma radiation was simulated using a tank of water containing radioactive sources.
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