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Schulthess, J., Woolstenhulme, N., Craft, A., Kane, J., Boulton, N., Chuirazzi, W., Winston, A., Smolinski, A., Jensen, C., Kamerman, D. and Wachs, D. (2020) Non-Destructive Post-Irradiation Examination Results of the First Modern Fueled Experiments in TREAT. Journal of Nuclear Materials, 541, 152442.
https://doi.org/10.1016/j.jnucmat.2020.152442

has been cited by the following article:

• TITLE: Assessment of Modeling Collimator Designs for Gamma-Ray Transmission of Uranium Oxide Spectrometry Using HPGe Detectors

  AUTHORS: Rasha Ali El-Tayebany, Hekmat Elbegawy

  KEYWORDS: Monte Carlo, High Purity Germanium (HPGe), Collimator, Uranium

  JOURNAL NAME: World Journal of Engineering and Technology, Vol.11 No.4, September 22, 2023

  ABSTRACT: Many scientific domains use gamma-ray spectrometry, but non-destructive gamma scanning and gamma emission tomography of radioactive fuel in particular. In the experimental setting, a collimator is frequently employed to focus on a particular location of interest in the fuel. Predictive models for the transmitted gamma-ray intensity through the collimator are required for both the optimization of instrument design and the planning of measurement campaigns. Gamma-ray transport accuracy is frequently predicted using Monte Carlo radiation transport methods, but using these tools in low-efficiency experimental setups is challenging due to the lengthy computation times needed. This study focused on the full-energy peak intensity that was transmitted through several collimator designs, including rectangle and cylinder. The rate of photons arriving at a detector on the other side of the collimator was calculated for anisotropic source of SNM (U3O8). Some geometrical assumptions that depended on the source-to-collimator distance and collimator dimensions (length, radius or length, height, and width) were applied to achieve precise findings.