CODE	NUCLIDE	ORIGINAL DATA TAKEN FROM	MODIFICATION	ADDITIONAL FILE MODIFICATIONS	ORIGINAL DATA TAKEN FROM	MODIFICATION	ADDITIONAL FILE MODIFICATIONS	COMMENTS
1002004	002_He_004	ENDF/B-VII CONVERTED FROM ENDF/B-VI BY NNDC OCT 2004	ENDF/B-VII.1 beta; G.M.Hale; LANL ; September 2010: The evaluation done originally by Nisley et al in 1973 has been updated to include the results of a more recent R-matrix analysis. The 1973 analysis was based on a simultaneous fit of n-alpha and p-alpha scattering data. The newer analysis (8/06) is a multi- channel fit to data for the n-alpha and d-t reactions that extends to about 24 MeV excitation energy in the 5He system. Although this is well above the d+t threshold, for the present, we give n-alpha data only over the original range up to 20 MeV, where it is single channel scattering. However, the results below the d+t threshold are constrained by the data at higher energies through the R-matrix parameterization, and they are therefore better determined than those of a single-channel analysis. In addition, covariances (MF=33) are given for MT=2, calculated from the parameter covariances and derivatives from the 5He analysis. It should be noted that while the rank of this covariance matrix is 115, corresponding to the number of free parameters in the fit, it is given at 152 energies. This means that in principle some of the zero eigenvalues could have small negative values due to the limited precision of the numbers in the file and the matrix is not guaranteed to be positive semi- definite. ENDF/B-VI MOD1 Revision, January 2001, P.G. Young and S.C. Frankle (LANL) The atomic weight ratio was corrected - changed from 4.0015 to 3.968219.		ENDF/B-VI MOD1	Revision, January 2001, P.G. Young and S.C. Frankle (LANL) The atomic weight ratio was corrected - changed from 4.0015 to 3.968219.