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Description of ASTM-E2426 2019ASTM E2426-10-Reapproved2019Active Standard: Standard Practice for Pulse Counting System Dead Time Determination by Measuring Isotopic Ratios with SIMSASTM E2426Scope 1.1 This practice provides the Secondary Ion Mass Spectrometry (SIMS) analyst with a method for determining the dead time of the pulse-counting detection systems on the instrument. This practice also allows the analyst to determine whether the apparent dead time is independent of count rate. 1.2 This practice is applicable to most types of mass spectrometers that have pulse-counting detectors. 1.3 This practice does not describe methods for precise or accurate isotopic ratio measurements. 1.4 This practice does not describe methods for the proper operation of pulse counting systems and detectors for mass spectrometry. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Keywords dead time; isotopic ratios; pulse counting; SIMS; ICS Code ICS Number Code 71.040.50 (Physicochemical methods of analysis) DOI: 10.1520/E2426-10R19 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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