Measurement of Diffusion Parameters and of Anisotropy of Graphite with a Pulsed Source of Neutrons; MESURE DES PARAMETRES DE DIFFUSION ET DE L'ANISOTROPIE DU GRAPHITE A L'AIDE D'UNE SOURCE PULSEE DE NEUTRONS

The diffusion coefficient, cooling coefficient, and anisot ropy of graphite were determined to be (2.19 plus or minus 0.03) x 10/sup 5/ cm/sup 2/ sec/sup -1/, (37.9 plus or minus 4) x 10/sup 5/ cm/sup 4/ sec/sup -2/, and 1.017 plus or minus 0.008, respectively. The range of geometrical buckling was from 7 to 155 m/sup -2/. The values obtained are compared with published values. (auth)