53 KB564 KB45 KB200020242009Belič, Igorštevilka:1letnik:43str. 11-21ISSN:1580-2949COBISSID:715946URN:URN:NBN:SI:doc-G1AOWOGQenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijemasna spektrometrijaplinivakuumThe pseudo-gradient algorithm for residual gas analysis| Psevdogradientna metoda za analizo masnih spektrov|The article focuses on a special approach to the qualitative and quantitative residual gas analysis of a vacuum-chamber atmosphere. The main outline of mass-spectrometry usage is given together with a brief comparison of two completely different scientific fields. The new approach, where the mass spectra are formalized in a vector annotation, to residual gas analysis is proposed. The main problem with residual gas analysis based on a mass spectrum is its ambiguity, which cannot be easily resolved. One way to deal with the problem is practical knowledge about the interpretation of mass spectra. The pseudo-gradient algorithm for mass-spectra analysis was developed and tested. The general testing platform was developed and the algorithm was tested within it. The presented work is the foundation for a comprehensive study of mass-spectrum analysis techniques. An important concept is the virtual environment that provides the mass-spectrum generator, the standard fragmentation patternsć database, the data space for the various algorithms that can test various approaches to the mass-spectrum analysis, and the database of the achieved results, which is necessary for the comparison of different algorithms and represents the backbone for the dynamic mass-spectra generation and analysisV prispevku je opisan nov način kvalitativne in kvantitativne analize rezidualnih plinov atmosfere v vakuumskem sistemu. Uvodoma je podan pregled različnih vrst uporabe masne spektrometrije, skupaj s pregledom dveh povsem različnih znanstvenih področij. Prikazan je nov način, ki pojmuje masne spektre v formalni vektorski obliki. Osnovni problem pri analizi masnih spektrov, ki ga ni mogoče enostavno rešiti, je njihova večličnost. Ena od možnosti je uvedba praktičnih izkušenj, ki algoritmu pomaga pri razrešitvi nekaterih dvoumij. Razvita in analizirana je psevdo-gradientna metoda za rezidualno analizo plinov iz masnega spektra. Razvito je bilo preizkusno okolje, v katerem je bil analiziran algoritem. Predstavljeno delo je temelj za široko študijo tehnik za analizo masnih spektrov. Pomemben koncept je virtualno okolje, ki vsebuje generator masnih spektrov, podatkovno bazo standardnih masnih spektrov, podatkovni prostor za hranjenje rezultatov preizkusov algoritmov, ki so nujni za kasnejšo primerjavo delovanja posameznih algoritmov. Virtualno okolje je tudi temelj za kasnejšo dinamično analizo masnih spektrovTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije