NIST Office of ECSED - 1999 Technical Highlights

Archive of Technical Activities

Office of Electronic Commerce in Scientific and Engineering Data

NIST Atomic Spectra Database 2.0 and Bibliography Online. This Office, in collaboration with the Atomic Spectroscopy Group of the Atomic Physics Division and the NIST Standard Reference Data Program, completed version 2.0 of the Atomic Spectra Database. The database has a completely new engine and vastly expanded data that integrates its atomic energy level information with its transition probability information. URL: physics.nist.gov/asd.

Also, the Atomic Spectral Line Broadening Bibliographic Database, containing 800 references, was developed and is available on the WWW. URL: physics.nist.gov/linebrbib. (K. Olsen)

Easier Access to Data Made Available. The Elemental Data Index (EDI) was developed in order to provide access to the holdings of PL online data organized by element. It is intended to simplify the process of retrieving online scientific data for a specific element. Data accessible through this index include: atomic spectroscopy, ionization cross sections, x-ray absorption, dosimetry, radionuclide half lives, atomic weights and isotopic compositions, and others. URL: physics.nist.gov/EDI.

A sitemap and search engine were also added to the website in order to assist users in finding information. URL: physics.nist.gov/Sitemap. (M. Zucker, J. Coursey, and R. Dragoset)

Atomic Weights and Isotopic Compositions Database Available. Atomic weights are available for 111 elements, and isotopic compositions are given when appropriate. This database was designed and made available so that the data could be incorporated into another database under development. URL: physics.nist.gov/Comp. (J. Coursey and R. Dragoset)

New Values of Fundamental Constants Online. The Office of ECSED, in collaboration with the Fundamental Constants Data Center, made available values of the constants recommended for international use by CODATA. Termed the "1998 CODATA Recommended Values," they are generally recognized worldwide for use in all fields of science and technology. URL: physics.nist.gov/constants. (P. Mohr)