Determination of Fast Neutron Fluence in Radiation Stability Tests of Steel Samples

摘要

The activation method is described of determining fast neutron fluence. Samples of steel designed for WWER type reactor pressure vessels were irradiated in the CHOUCA-rigs in the core of the WWR-S reactor. The neutron spectrum was measured by the multiple activation foil method and the effective cross sections of fluence monitors were calculated. The fluences obtained from the reactions exp 54 Fe(n,p) exp 54 Mn and exp 63 Cu(n, alpha ) exp 60 Co are presented and the method is discussed. (Atomindex citation 12:608482)