The use of a BF3 remmeter to calibrate neutron activation foils in the medical linear accelerator environment.
A technique has been developed for radiation protection purposes whereby it is possible to measure the dose-equivalent due to neutrons from a dual energy medical linear accelerator using a conventional BF3 neutron remmeter to calibrate gold foils. This technique has been applied to measuring the neutron dose-equivalent from a Philips SL75-20 medical linear accelerator. The tenth value distance for the entrance maze is 3.3 +/- 0.5m compared to a typically quoted value of 5m. This suggests that the use of wood and boron tiles in the construction of the entrance maze can reduce neutron propagation down the maze.
Borchardt
I M
IM
Department of Medical Physics, Royal Adelaide Hospital, Australia.
Beckham
W A
WA
Sorell
G C
GC
Beddoe
A H
AH
D002138:Calibration; D009502:Neutrons; D010315:Particle Accelerators