Description of the input parameters for NSOURCES:
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MODERATOR TEMPERATURE [K]: The moderator temperature in Kelvin

SPECTRUM:   Select the spectral zone to calculate flux:
	Thermal neutron flux: Maxwellian distribution valid for E < 0.2 eV
        Epithermal neutron flux: 0.2 eV < E < 0.5 MeV
        Fast neutron flux: E > 0.5 MeV

MAX FLUX (THERMAL/EPITHERMAL/FAST) [n/cm2/s]:  Maximum flux

NUMBER OF POINTS: Number of energy points for the energy spectra