Abstract

The RIVM has available a biological irradiation facility (BBF) for the irradiation of biological samples and small animals. The dosimetry of the BBF was performed by the Dosimetry Section of the RIVM. The results show that the absorbed dose in water (determined on January 1, 1990) is equal to 0.97 gy/timer-unit, with a total uncertainty of 7% (1 sigma). During the rotation of the irradiation chamber the absorbed dose (determined on January 1, 1990) is equal to 0.38 gy, with a total uncertainty of 15% (1 sigma).