ABUNDANCES OF LONG-LIVED DELAYED NEUTRON GROUPS (t1/2 > 1 min) IN THE FISSION OF 235U, 238U AND 239Pu BY FISSION-SPECTRUM NEUTRONS

摘要

Upper limits are estimated for the abundances of long-lived delayed neutron groups (t1/2 > 1 min) in the fission of 235U, 238U and 239Pu by fission spectrum neutrons. The estimates are based on experimental measurements made on the thermal neutron fission of 235U