SCALE Software Coordinator
This topic has been migrated from the SCALE 5 ORIGEN notebook.
Date: Fri Mar 14 13:38:45 2008
Steve,
Thanks for your response on my Eu-150 question. I now have another question on the historical changes in Origen.
I am doing an independent verification of an earlier study done that used Origen 2. I am using the new Origen ARP. I found a 1992 article "An Origen 2 Update for PCs and Mainframes" by Scott Ludwig, Conf-920430-3. He explains some changes between Origen 2 to Origen 2.1 where, for example, the new model predicts an increase in Cm-242. I have noticed this in my models.
If available, do you have such an article that mentions the changes between Origen 2.x to Origen ARP? I would like to see if other things have changed that may explain some of the discrepancies that I am seeing.
Thanks for your help.
Alan Herbst
SCALE Software Coordinator
Alan
ORIGEN-ARP uses the ORIGEN-S module ("S" is for "SCALE"), which was derived from the original ORIGEN code, independent of the development of ORIGEN2 (also derived from the original ORIGEN code). Attached is a <a href="http://www.ornl.gov/sci/scale/papers/ORIGEN-S_vs_ORIGEN2.pdf">1992 paper</A> describing the differences between ORIGEN-S and ORIGEN2. Also attached is a <a href="http://www.ornl.gov/sci/scale/papers/origen-arp_5.1.pdf">brief description</A> of the current version of ORIGEN-ARP in SCALE 5.1 and the major enhancements that have been made in recent years.