CALCULATED COMPTON PROFILES : EXPERIMENTAL CHECK OF THE DEVIATION FROM THE IMPULSE APPROXIMATION IN GRAPHITE A. ISSOLAH, J . CHOMILIER, G. LOUPIAS, B. LEVY et A. BESWICK J. Phys. Colloques, 48 C9 (1987) C9-847-C9-850 DOI: 10.1051/jphyscol:19879151