You want decay data, we got decay data. We have extracted new decay data from the Brookhaven National Laboratory's (BNL) National Nuclear Data Center (click here to go to their site) needed to calculate our Dose Factors. We pulled down data for about 850 radionuclides of interest to internal and external dose assessment, including much of the data in ICRP 38 and the MIRD 1989 decay data compendium, with a few new entries. We extracted data for all emissions that contribute 0.01% or more to the total decay scheme. If there is a nuclide that is not in that list that you want analysis for (and this always happens!), we can calculate new DFs for you off-line.

The technical basis and the data have been peer reviewed and the technical basis has been published in the Health Physics Journal (Health Phys. 83(4):471-475, 2002).

You can just view the data at this link (our thanks and kudos to Fred Baes for this fine effort), or if you want to use the data for calculations, you may wish to download them in an Excel spreadsheet (~8 MB) and a Word document (~5 MB). Download them by clicking on the links below.

**NOTE - if you have downloaded these files before June 2002, you may want to download them again, there were minor changes and enhancements made during the article review process.**

Give me the Excel File this instant!

Give me the Word document or I'll hafta hurtya!

We also put together a compilation of beta spectra for many beta and positron emitters. We're so darn nice we even formatted them for direct input to the MCNP radiation transport code (well, OK, we're really not that nice, we're just lazy, we use MCNP a lot...)

Give me the Beta Spectrum File already!

**NOTE - the beta spectra file was modified in March, 2003, to modify some results and remove some suspect spectra. If you have downloaded this file before March 2003, you may want to download it again.**

Now you can follow the links below to explore more data sources on this site...