M. Dury, Subrena Harris, Teresa M Goodman, W. Servantes, Malcolm White
{"title":"An Assessment of the Ageing of the Absolute Spectral Responsivity of Trap Detectors at Krypton Ion Laser Emission Wavelengths","authors":"M. Dury, Subrena Harris, Teresa M Goodman, W. Servantes, Malcolm White","doi":"10.1088/1681-7575/ad615d","DOIUrl":null,"url":null,"abstract":"\n We have assessed the absolute spectral responsivities of three-element trap detectors calibrated against the NPL primary standard cryogenic radiometer at eight krypton ion laser emission wavelengths over an approximate period of twenty-years. As expected, we observed that the absolute spectral responsivities decrease with time. Additionally, we found that as the wavelength decreases, the ageing rate increases. At 356.4 nm, an average responsivity decrease of around -1800 ppm/year is reported. While at longer wavelengths, the slowest rate of ageing, approximately 40 ppm/year, occurs at 799.3 nm. Interestingly, the year-on-year changes exhibit a relatively linear trend, allowing us to predict the future performance of the trap detectors. It is important to note, however, that predicted performance cannot be guaranteed and regular recalibration against a primary standard is essential, especially if low calibration uncertainties are required.","PeriodicalId":18444,"journal":{"name":"Metrologia","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metrologia","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1088/1681-7575/ad615d","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
We have assessed the absolute spectral responsivities of three-element trap detectors calibrated against the NPL primary standard cryogenic radiometer at eight krypton ion laser emission wavelengths over an approximate period of twenty-years. As expected, we observed that the absolute spectral responsivities decrease with time. Additionally, we found that as the wavelength decreases, the ageing rate increases. At 356.4 nm, an average responsivity decrease of around -1800 ppm/year is reported. While at longer wavelengths, the slowest rate of ageing, approximately 40 ppm/year, occurs at 799.3 nm. Interestingly, the year-on-year changes exhibit a relatively linear trend, allowing us to predict the future performance of the trap detectors. It is important to note, however, that predicted performance cannot be guaranteed and regular recalibration against a primary standard is essential, especially if low calibration uncertainties are required.
期刊介绍:
Published 6 times per year, Metrologia covers the fundamentals of measurements, particularly those dealing with the seven base units of the International System of Units (metre, kilogram, second, ampere, kelvin, candela, mole) or proposals to replace them.
The journal also publishes papers that contribute to the solution of difficult measurement problems and improve the accuracy of derived units and constants that are of fundamental importance to physics.
In addition to regular papers, the journal publishes review articles, issues devoted to single topics of timely interest and occasional conference proceedings. Letters to the Editor and Short Communications (generally three pages or less) are also considered.