What is URR-PACK?
The URR-PACK package is a collection of codes for calculating self-shielding in the unresolved resonance energy range. It augments the PREPRO package by providing multi-band parameters that can be used to assemble application libraries for continuous-energy transport codes (e.g. libraries in ACE format for Monte Carlo calculations).
You can download the complete package and documentation.
Download Codes
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URR-PACK 2016 History: Check for Changes that Effect you