Organ doses from radionuclides on the ground. Part II. Non-trivial time dependences

Organ dose equivalent rates and cumulative organ dose equivalents for photon exposures from plane sources on the ground have been calculated for 159 radionuclides, which can be expected to be released in relevant quantities during accidents in nuclear reactors or reprocessing plants. For 45 of these radionuclides, the contributions of daughter nuclides induce a dependence of the dose equivalents on time, which is not approximated accurately enough by the method proposed for the other radionuclides in a companion article. Results are presented in tables which allow easy reference for radiological calculations.