Title :
Comparison of Measured Dose Enhancement Effects in LiF TLDs with 2-D Monte Carlo Predictions
Author :
Hart, R.R. ; Beezhold, W. ; Lorence, L.J., Jr. ; Smith, A.J.
Author_Institution :
Department of Nuclear Engineering, Texas A&M University, College Station, Texas 77843
Abstract :
Relative-dose-enhancement factors in LiF dosimeters were measured as a function of spacing between the dosimeters and an Al-Au bilaminate filter in a bremsstrahlung spectrum of 145 keV average energy. Results essentially agree with 2-D Monte Carlo code predictions. However, the calculated results may be somewhat greater than the experimental results at zero bilaminate spacing. 2-D effects were found to be significant at 1.9cm bilaminate spacing. A 40 micron thick Al foil interposed between the bilaminate and the dosimeters reduced dose enhancement by approximately a factor of 10.
Keywords :
Annealing; Boundary conditions; Electron accelerators; Electron beams; Energy measurement; Filters; Gold; Monte Carlo methods; Particle beams; Performance evaluation;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1986.4334588
