
TYPE:	form factors for spectral intensity	

FORM:	ascii
	four space delineated columns (now includes atomic number in first
	row of first column, and is complete for all elements).

SOURCE:	Constructed from MCNP data files by Scott Wilderman, December, 1999,
	installed at HFHS, May 2002.  Original source may or may not be
	the same as with previous data:
        Hubbell, J. H., Veigele, Wm. J., Briggs, E. A., Brown, R. T.,  
        Cromer, D. T., Howertor, R. J., Atomic Form Factors, Incoherent
        Scattering Functions, and Photon Cross Sections, J Phys Chem Ref       
        Data, Vol.4, No.3, p. 471, 1975.  	

NOTE:	In a conversation I've had with Red Cullen who heads (?) the
	cross section group in Computational Physics at LLNL, he mentioned
	that the Hubbell data from '75 has since been updated twice, but
	that the two modifications essentially negated each other, and
	the 1975 data is probably okay.  (SJW)

	This file supercedes ff and ffact

