{"title":"Effect of anomalous scattering and K-fluroscence reabsorption on the performance of selenium","authors":"A. Sultana, A. Reznik, K. Karim, J. Rowlands","doi":"10.1109/SMICND.2008.4703366","DOIUrl":null,"url":null,"abstract":"Selenium (Se) has been successfully employed as a photoconductor to convert incident X-rays to electronic charges in direct conversion flat panel detectors for digital imaging systems. We have studied the effect of K-fluorescence reabsorption coupled with anomalous scattering on the performance of Se in protein crystallography detectors. Anomalous scattering is used as a method of phase calculation in crystallography. For occurrence of anomalous scattering, incident X-ray energy is made equal to the K-edge energy of Se. Our study indicates that significant K--fluorescence escape and reabsorption occurs at K-edge energy which degrades spatial resolution, sensitivity, and signal-to-noise ratio of the detector.","PeriodicalId":6406,"journal":{"name":"2008 IEEE International Conference on Semiconductor Electronics","volume":"10 1","pages":"193-196"},"PeriodicalIF":0.0000,"publicationDate":"2008-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 IEEE International Conference on Semiconductor Electronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SMICND.2008.4703366","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
Selenium (Se) has been successfully employed as a photoconductor to convert incident X-rays to electronic charges in direct conversion flat panel detectors for digital imaging systems. We have studied the effect of K-fluorescence reabsorption coupled with anomalous scattering on the performance of Se in protein crystallography detectors. Anomalous scattering is used as a method of phase calculation in crystallography. For occurrence of anomalous scattering, incident X-ray energy is made equal to the K-edge energy of Se. Our study indicates that significant K--fluorescence escape and reabsorption occurs at K-edge energy which degrades spatial resolution, sensitivity, and signal-to-noise ratio of the detector.
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