data = read_endf(filename)
import ENDF files, either using PyNE or slower/partial Matlab reader.
Useful tokens for neutron scattering
MF1/MT451 as 'info':
ZA Standard material charge
AWR Standard material mass
AWI Mass of the projectile in neutron units
EMAX Upper limit of energy range for evaluation.
TEMP Target temperature (Kelvin) for Doppler broadening.
MF7/MT4 as 'thermal_inelastic':
LAT Flag indicating which temperature has been used to compute a and b
LAT=0, the actual temperature has been used.
LAT=1, the constant T0 = 0.0253 eV has been used (293 K).
LASYM Flag indicating whether an asymmetric S(a,b) is given
LASYM=0, S is symmetric.
LASYM=1, S is asymmetric
B=[sigma_free, E_elastic, A=mass/mn, E_max, ~, atom_multiplicity]
sigma_bound = sigma_free*(A+1)^2/A^2
MF7/MT2 as 'thermal_elastic':
SB Bound cross section (barns) [incoherent elastic LTHR=2]
Format is defined at https://www.oecd-nea.org/dbdata/data/manual-endf/endf102.pdf
(c) E.Farhi, ILL. License: EUPL.