NIST has nearly five decades of experience in the development of critically evaluated, comprehensive databases of cross-section information for ionizing photons (x and gamma rays), electrons, and heavy charged particles. These data are often adopted by national and international standards organizations for use in radiation protection, medical therapy, and industrial applications.
This work continues in the Division's Photon and Charged-Particle Data Center. The compilations of the Data Center rely heavily on evaluating measurements and on their synthesis with available theory to extend the data and provide for comprehensive coverage over broad ranges of energy and materials. The quality of the work of the Data Center is reflected in the many requests for our data from other laboratories and in the use of our data in many computer codes, engineering and scientific compendia, books and review articles, and in the reports and protocols of national and international standards organizations. Each year we respond to inquiries from the medical, industrial, academic, government, and other scientific communities for technical information and data. We also participate as consultants to or as members of committees that evaluate the best available data for particular applications. For example, we are currently serving on a committee for the International Commission on Radiation Units and ICRU Report 37 (left) and NBSIR Measurements (ICRU) that is expected to produce a report on key physical data for use in dosimetry applications. With the help of the NIST Physical Measurement Laboratory's Office of Electronic Commerce in Scientific and Engineering Data, a number of the Center's databases can be accessed on the worldwide web