Experimental verification of bremsstrahlung dosimetry predictions for 0. 75 MeV electrons
Bremsstrahlung dose in CaF/sub 2/ TLDs from the radiation produced by 0.75 MeV electrons incident on Ta/C targets is measured and compared with that calculated via the CYLTRAN Monte Carlo code. The comparison was made to validate the code, which is used to predict and analyze radiation environments of flash x-ray simulators measured by TLDs. Over a wide range of Ta target thicknesses and radiation angles, the code is found to agree with the 5% measurements. For Ta thickness near those that optimize the radiation output, however, the code overestimates the radiation dose at small angles. Maximum overprediction is about 14 +- 5%. The general agreement, nonetheless, gives us confidence that the TLD calibration procedure is satisfactory and that the code performs well at this energy. For the bulk of the measurements, a standard TLD employing a 2.2 mm thick Al equilibrator was used. In this paper, we also show that this thickness can significantly attenuate the free-field dose and introduce significant photon buildup in the equilibrator.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6853467
- Report Number(s):
- SAND-85-1517; ON: DE87004776
- Country of Publication:
- United States
- Language:
- English
Similar Records
Experimental verification of bremsstrahlung production and dosimetry predictions for 15.5 MeV electrons
Experimental verification of bremsstrahlung production and dosimetry predictions as a function of energy and angle
Related Subjects
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ALKALINE EARTH METAL COMPOUNDS
BEAMS
BREMSSTRAHLUNG
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CARBON
COLLISIONS
COMPUTERIZED SIMULATION
DOSEMETERS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRON COLLISIONS
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LEPTON BEAMS
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
METALS
NONMETALS
PARTICLE BEAMS
RADIATIONS
SIMULATION
TANTALUM
TARGETS
THERMOLUMINESCENT DOSEMETERS
TRANSITION ELEMENTS