Pile Poison – Procedure for Calculating effect of Various Materials on Pile Reactivity

摘要

Even a material of known cross section for absorption, cross section for scattering, density, and atomic weight, the strength of a full column is obtained for the homograph. A myrnalloy column on this chart is found to have a strength of 67 in sours. Fowler and resort in document 7-3205, “Final Report on production list 305-8-17, December 21, 1949, a value of 64 16 ih. for a full mynalloy column from test results Obtained in the 305 pile. For the limiting case of a column made of material of cry high cross section (black to neutrons) the nomograph gives a value 65 ih. It is impractical the expand the can be to the 68 ih. Value for a black column in the loss of uranium. All chess figures are nominal;that is , for a column in the center of an otherwise unflattened 105 pile. The effective in the high poisoned pile may be determined according to the procedure for permanent poison column.