Beta primary standard for radiation protection purposes

The primary standard measuring facility for the unit of the absorbed dose rate of beta radiation in tissue for the field of radiation protection (low dose rates at great distances from the radiation source) comprises a volume extrapolation ionization chamber, a highly sensitive charge measuring system, a highly precise voltage source for the chamber voltage, a distance meter for measuring the chamber depth and instruments for measuring the parameters of the environment (temperature, atmospheric pressure, humidity of the air). Control of the measuring assembly and data acquisition are ensured by a software program installed on a PC.

Literature

1. BÖHM, J.:
   The National Primary Standard of the PTB for Realizing the Unit of the Absorbed Dose Rate to Tissue for Beta Radiation
   PTB-Bericht: PTB-Dos-13 (1986), ISSN 0172-7095
   
   
2. DRAKE, K.-H., BÖHM, J.:
   Automatisierter Messstand für die Dosimetrie von Betastrahlung
   PTB-Bericht: PTB-Dos-19 (1990), ISBN 3-89429-012-9