## Abstract

The exposure rate constant r is calculated and tabulated for 1084 nuclides. The exposure rate constant is defined as the ratio of the product of the exposure rate and the square of the distance from a radioactive point source to the source

strength Q.

The dose equivalent rate constant T is here defined as the ratio of the mean dose equivalent rate to a water cylinder of 30 cm diameter and 100 cm height placed 100 cm from a radioactive source to the source strength Q. The source is placed at the midplane of the cylinder. The dimensions of the cylinder were chosen to approximate a human phantom of 70 kg mass. The dose equivalent rate constant is calculated and tabulated for 1084 nuclides. For both quantities, r and T, the contributions from photon energies below 30 keV and X-rays are omitted.

The data are based on the Evaluated Nuclear Structure Data File, which is compiled by the Nuclear Data Group at Oak Ridge National Laboratory.

strength Q.

The dose equivalent rate constant T is here defined as the ratio of the mean dose equivalent rate to a water cylinder of 30 cm diameter and 100 cm height placed 100 cm from a radioactive source to the source strength Q. The source is placed at the midplane of the cylinder. The dimensions of the cylinder were chosen to approximate a human phantom of 70 kg mass. The dose equivalent rate constant is calculated and tabulated for 1084 nuclides. For both quantities, r and T, the contributions from photon energies below 30 keV and X-rays are omitted.

The data are based on the Evaluated Nuclear Structure Data File, which is compiled by the Nuclear Data Group at Oak Ridge National Laboratory.

Original language | English |
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Place of Publication | Roskilde, Denmark |
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Publisher | Risø National Laboratory |

Number of pages | 423 |

ISBN (Print) | 87-550-0898-4 |

Publication status | Published - 1982 |

Series | Risø-M |
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Number | 2322 |

ISSN | 0418-6435 |

## Keywords

- Risø-M-2322
- Buildup
- Cross sections
- Dose equivalents
- Dose rates
- Evaluated data
- External irradiation
- Gamma radiation
- Phantoms
- Photons
- Radation doses
- Radioisotypes