The NEWXS Library

Released: 1986-07-25

The newxs library contains LANL based evaluations based off of previous libraries such as ENDL85, ENDF/B-V, and Group T-2. The isotopes adjusted, new and previous ZAIDs, and source of data can be seen in the table below.

Isotope	New ZAID	Previous ZAID	Source of Previous Data
5-B-11	5011.56	5011.55	LANL*
63-Eu-151	63151.55	63151.50	ENDF/B-V
63-Eu-153	63153.55	63153.50	ENDF/B-V
67-Ho-165	67155.55	67167.35	ENDL85
79-Au-197	79197.55	79157.50	ENDF/B-V

*See "n+11B Gamma-Ray Production Evaluation"

Documentation

1. "Improved Cross Sections from Group T-2 for 11B, 151Eu, 153Eu, and 165Ho," Little, R.C., Seamon, R.E., (1986) LA-UR-21-27725
2. "Processing the Latest 197Au Evaluation from Group T-2," Little, R.C., (1986), LA-UR-21-27680

• "n+11B Gamma-Ray Production Evaluation," Little, R.C., Seamon, R.E., (1984) LA-UR-21-27080