{"title":"激光材料加工机的测量:光谱反褶积,包括不确定度和模型选择","authors":"R. Behrens, B. Pullner, M. Reginatto","doi":"10.5194/JSSS-10-13-2021","DOIUrl":null,"url":null,"abstract":"Abstract. Laser materials processing of workpieces using ultra-short pulsed lasers can lead to unwanted X-ray emission. Their dose rate and spectral distribution have been precisely determined. The measurements were\ncarried out using a thermoluminescence detector (TLD)-based spectrometer in which 30 TLD planes are arranged one behind the other, the first 10 layers\nmade of polymethyl methacrylate, while the remaining 20 layers are interspaced by absorbers with, from the front to the back, increasing atomic\ncharge and thickness. The penetration depth of the radiation into the\nspectrometer depends on its energy, so that the energy-resolved spectrum of\nthe radiation can be calculated from the TLD dose values by means of\nmathematical methods (Bayesian deconvolution). The evaluation process also\ntakes into account both the uncertainties of all input quantities and the\npossibility of adopting different models for the spectrum form. This allowed\nthe resulting spectra to be associated with their realistic uncertainty. The measurements are traceable to the Systeme international d'unites (SI), i.e. the International System of Units. The results not only provide manufacturers and users of ultra-short pulsed lasers with important information on the design of the machines with regard to radiation\nprotection, but were also included in the recently concluded legislative procedure in the field of radiation protection in Germany.","PeriodicalId":17167,"journal":{"name":"Journal of Sensors and Sensor Systems","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2021-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Measurements at laser materials processing machines: spectrum deconvolution including uncertainties and model selection\",\"authors\":\"R. Behrens, B. Pullner, M. Reginatto\",\"doi\":\"10.5194/JSSS-10-13-2021\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract. Laser materials processing of workpieces using ultra-short pulsed lasers can lead to unwanted X-ray emission. Their dose rate and spectral distribution have been precisely determined. The measurements were\\ncarried out using a thermoluminescence detector (TLD)-based spectrometer in which 30 TLD planes are arranged one behind the other, the first 10 layers\\nmade of polymethyl methacrylate, while the remaining 20 layers are interspaced by absorbers with, from the front to the back, increasing atomic\\ncharge and thickness. The penetration depth of the radiation into the\\nspectrometer depends on its energy, so that the energy-resolved spectrum of\\nthe radiation can be calculated from the TLD dose values by means of\\nmathematical methods (Bayesian deconvolution). The evaluation process also\\ntakes into account both the uncertainties of all input quantities and the\\npossibility of adopting different models for the spectrum form. This allowed\\nthe resulting spectra to be associated with their realistic uncertainty. The measurements are traceable to the Systeme international d'unites (SI), i.e. the International System of Units. The results not only provide manufacturers and users of ultra-short pulsed lasers with important information on the design of the machines with regard to radiation\\nprotection, but were also included in the recently concluded legislative procedure in the field of radiation protection in Germany.\",\"PeriodicalId\":17167,\"journal\":{\"name\":\"Journal of Sensors and Sensor Systems\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2021-02-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sensors and Sensor Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5194/JSSS-10-13-2021\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"INSTRUMENTS & INSTRUMENTATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sensors and Sensor Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5194/JSSS-10-13-2021","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
Measurements at laser materials processing machines: spectrum deconvolution including uncertainties and model selection
Abstract. Laser materials processing of workpieces using ultra-short pulsed lasers can lead to unwanted X-ray emission. Their dose rate and spectral distribution have been precisely determined. The measurements were
carried out using a thermoluminescence detector (TLD)-based spectrometer in which 30 TLD planes are arranged one behind the other, the first 10 layers
made of polymethyl methacrylate, while the remaining 20 layers are interspaced by absorbers with, from the front to the back, increasing atomic
charge and thickness. The penetration depth of the radiation into the
spectrometer depends on its energy, so that the energy-resolved spectrum of
the radiation can be calculated from the TLD dose values by means of
mathematical methods (Bayesian deconvolution). The evaluation process also
takes into account both the uncertainties of all input quantities and the
possibility of adopting different models for the spectrum form. This allowed
the resulting spectra to be associated with their realistic uncertainty. The measurements are traceable to the Systeme international d'unites (SI), i.e. the International System of Units. The results not only provide manufacturers and users of ultra-short pulsed lasers with important information on the design of the machines with regard to radiation
protection, but were also included in the recently concluded legislative procedure in the field of radiation protection in Germany.
期刊介绍:
Journal of Sensors and Sensor Systems (JSSS) is an international open-access journal dedicated to science, application, and advancement of sensors and sensors as part of measurement systems. The emphasis is on sensor principles and phenomena, measuring systems, sensor technologies, and applications. The goal of JSSS is to provide a platform for scientists and professionals in academia – as well as for developers, engineers, and users – to discuss new developments and advancements in sensors and sensor systems.