The investigation of the n-λ-radiolysis of nutrogen tetroxide under super-critical conditions

Abstract The yield of the “irreversible” products of nitrogen tetroxide radiolysis has been determined in stainless steel ampoules in the field of the reactor mixed radiation. Radiolysis has been investigated in the range of temperatures 200–350°C, pressures 7.8-15. 7 MPa and dose rates 48 and 162 W/kg. The measured primary yield of nitrogen atoms under nitrogen dioxide radiolysis is equal to 0.28+0.02 at/100 eV at 250°C. It is shown that in the investigated range of temperatures and pressures the yield of the “irreversible” radiolysis products can be determined using the known kinetic data on the reactions of nitrogen atoms with molecules and assuming the primary yield of nitrogen atoms from nitrogen dioxide and nitric oxide equal to 0.28 and 45 at/100 eV respectively.