Experimental verification of bremsstrahlung production and dosimetry predictions for 15. 5 MeV electrons

In this paper the radiation produced by a 15.5-MeV mono-energetic electron beam incident on optimized and non-optimized bremsstrahlung targets is characterized using the ITS Monte Carlo code and measurements with equilibrated and non-equilibrated TLD dosimetry. Comparisons between calculations and m...

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Bibliographic Details
Main Authors: Sanford, T.W.L., Beutler, D.E., Halbleib, J.A., Knott, D.P.
Format: Conference Proceeding
Language:English
Subjects:
440200 - Radiation Effects on Instrument Components, Instruments, or Electronic Systems
BREMSSTRAHLUNG
COMPUTER CODES
CORRELATIONS
DOSE RATES
DOSIMETRY
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FUNCTIONS
I CODES
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LEPTONS
LUMINESCENCE
MARTIN-SCHWINGER THEORY
MEV RANGE
MEV RANGE 10-100
MONTE CARLO METHOD
OPTIMIZATION
RADIATION EFFECTS
RADIATIONS
RESPONSE FUNCTIONS
TARGETS
THERMOLUMINESCENCE
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Summary:In this paper the radiation produced by a 15.5-MeV mono-energetic electron beam incident on optimized and non-optimized bremsstrahlung targets is characterized using the ITS Monte Carlo code and measurements with equilibrated and non-equilibrated TLD dosimetry. Comparisons between calculations and measurements verify the calculations and demonstrate that the code can be used to predict both bremsstrahlung production and TLD response for radiation fields that are characteristic of those produced by pulsed simulators of gamma rays. At optimum bremsstrahlung production, the predicted total forward radiation fluence detected in equilibrated TLD dosimetry agrees with that measured with the {plus minus} 6% uncertainty of the measurement. The absolute comparisons made here provide independent confirmation of the validity of the TLD calibration for photon fields characteristic of gamma-ray simulators. The empirical Martin equation, which is often used to calculate radiation dose from optimized bremsstrahlung targets, is examined, and its range of validity is established from the data presented.
ISSN:0018-9499
1558-1578
DOI:10.1109/23.124089