ENERGY-DEPENDENT AND SPECTRUM-AVER AGED THERMAL CROSS SECTIONS FOR THE HEAVY ELEMENTS AND FISSION PRODUCTS FOR VARIOUS TEMPERATURES AND C: U235 ATOM RATIOS

摘要

Energy-dependent point cross sections are recorded over the range from 0.005to 2.5ev for the heavy element Th, U233, U234, U235, U236, Np239, Pu239, Pu240, Pu241, and Pu242; for the specific fission products Mo96, Tc99, Rh103, Cd113, Xe131, Xe135, Cs133, Cs135, Nd143, Nd145, Pm147, Sm149, Sm151, Sm152, Eu153, Gd155; and for the fission-products aggregates for U233, U235, and Pu239. The point cross sections are in a form suitable for use with General Atomic's thermalization codes. Examples of thermal spectra and associated average cross sections are recorded for C: U 235 atom ratios of 2,819, 5,000, 7,500, and 10,000 for various graphite temperatures.