Evaluation of gamma-ray and neutron attenuation properties of some polymers
By M. R. Kaçal, F. Akman, M. I. Sayyed. Nuclear Engineering and Technology, 2019
225 citations recorded by the source corpus.
Abstract In the present work, we determined the gamma-ray attenuation characteristics of eight different polymers(Polyamide (Nylon 6) (PA-6), polyacrylonitrile (PAN), polyvinylidenechloride (PVDC), polyaniline (PANI), polyethyleneterephthalate (PET), polyphenylenesulfide (PPS), polypyrrole (PPy) and polytetrafluoroethylene (PTFE)) using transmission geometry utilizing the high resolution HPGe detector and different radioactive sources in the energy range 81–1333 keV. The experimental linear attenuation coefficient values are compared with theoretical data (WinXCOM data). The linear attenuation coefficient of all polymers reduced quickly with the increase in energy, at the beginning, while decrease more slowly in the region from 267 keV to 835 keV. The effective atomic number of PVDC and PTFE are comparatively higher than the Zeff of the remaining polymers, while PA-6 possesses the lowest effective atomic number. The half value layer results showed that PTFE (C2F4, highest density) is more effective to attenuate the gamma photons. Also, the theoretical results of macroscopic effective removal cross section for fast neutrons (∑R) were computed to investigate the neutron attenuation characteristics. It is found that the ∑R values of the eight investigated polymers are close and ranged from 0.07058 cm−1 for PVDC to 0.11510 cm−1 for PA-6.
Subfields: Biomedical Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/7fa669c24e67f1e2531b41dfce43ed4fdd3c4ad2
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Citations in the corpus
- Gamma ray shielding characteristics and exposure buildup factor for some natural rocks using MCNP-5 code (2019, background): “In the last few years, the researchers and investigators reported a great number of articles, which aimed to evaluate the shielding properties of different materials such as rocks [4,5], concretes [2,6e8], building materials [9,10], ceramics [11] alloys [12e14] nanocomposites [15], polymers [16] and”