Relationships between Dosimeter Response and Absorbed Dose for 0.66-MeV Gamma Rays and for 2.95-MeV Neutrons.
DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
Pagination or Media Count:
The dose at sites in the interior and on the surface of a human phantom was measured for broad-beam exposure to 0.66-MeV gamma rays and to 2.95-MeV neutrons. Measurements were made for a range of angles of radiation incidence. A comparison is presented between the surface dose at possible dosimeter locations on the chest, abdomen and groin and the corresponding absorbed dose to the bone-marrow system and to the abdomen. Unless the geometry of exposure is accurately known, it is shown that a chest dosimeter is a poor indicator of the absorbed dose. A dosimeter worn on the groin would be significantly better for both neutrons and gamma rays for a wide range of exposure geometries. Author