Standard Reference Materials

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Excerpt from Standard Reference Materials: Preparation and Certification of Srm-2530, Ellipsometric Parameters ¿ and ¿ and Derived Thickness and Refractive Index of a Silicon Dioxide Layer on SiliconStandard Reference Materials (srm's) as defined by the National Institute of Standards and Technology (nist), formerly the National Bureau of Standards (nbs), are well characterized materials, produced in quantity and certified for one or more physical or chemical properties. They are used to assure the accuracy and compatibility of measure ments throughout the Nation. I srm's are widely used as primary standards in many diverse fields in science, industry, and technology, both within the United States and throughout the world. They are also used extensively in the fields of environmental and clinical anal ysis. In many applications, traceability of quality control and measurement processes to the national measurement system is carried out through the mechanism and use of srm's. For many of the Nation's scientists and technologists, it is therefore of more than passing interest to know the details of the measurements made at nist in arriving at the certified values of the srm's produced. An nist series of papers, of which this publication is a member, called the nist Special Publication 260 Series, is reserved for this purpose.The 260 Series is dedicated to the dissemination of information on different phases of the preparation, measurement, certification, and use of N ist srm's. In general, much more detail will be found in these papers than is generally allowed, or desirable, in scientific jour nal articles. This enables the user to assess the validity and accuracy of the measurement processes employed, to judge the statistical analysis, and to learn details of techniques and methods utilized for work entailing greatest care and accuracy. These papers also should provide sufficient additional information not found on the certificate so that new applications in diverse fields no't foreseen at the time the srm was originally issued will be sought and found.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.