Absolute determination of dose rate from energetic electron beams.
A method for absolute dose rate determinations in the range of 10(7) rad (Si) s(-1) to greater than 10(10) rad (Si) s(-1) is reported here. The method is useful in determining the simultaneous dose rate delivered to a device under test which is small enough that it does not significantly affect the beam current. The method requires (1) an instrument consisting of a Faraday cup, scattering plates, and collimators, (2) beam profile measurements, and (3) energy deposition calculations. The Faraday cup is designed for electron beams whose energy is in the range 5-50 MeV. This method is capable of providing dose rates accurate to 10% and total dose to 5%.
Murray
K
K
Radiation Technology Division, Naval Research Laboratory, Washington, DC 20375.
Guenzer
C S
CS