THE HEAT DEFECT IN THE WATER ABSORBED DOSE CALORIMETER

The water absorbed dose calorimeter can be established as a primary st andard for the quantity, water absorbed dose, if the heat defect probl em can be solved. The method chosen is an experimental absolute determ ination using a total absorption calorimeter for high energy electrons , so that the heat defect need not necessarily be zero, which is a cru cial condition, but only stable. First results, including investigatio ns of the stability of the heat defect for various aqueous solutions, are presented.