Radiation shielding and gamma ray attenuation properties of some polymers

Abstract

In the pres ent work we in ves ti gated the gamma ra di a tion pa ram e ters as mass at ten u a tion coef fi cients m/r, the to tal atomic scat ter ing cross-sec tions s t , the elec tronic scat ter ing cross-sections s e , the ef fec tive atomic num bers Z eff , and the ef fec tive elec tron den si ties N eff for some poly mers such as polyoxymethylene (CH 2 O), poly acrylonitrile (C 3 H 3 N), nat u ral rub ber (C 5 H 8), poly ethyl acrylate (C 5 H 8 O 2), polyphenyl methacrylate (C 10 H 10 O 2), and poly eth ylene tetraphthalate (C 10 H 8 O 4). The gamma ray pho tons were de tected by NaI(Tl) de tec tor with res o lu tion of 8.2 % at 662 keV, us ing ra dio ac tive gamma ray sources 57 Co, 133 Ba, 137 Cs, 54 Mn, 60 Co, and 22 Na at en er gies 122, 356, 511, 662, 840, 1170, 1275, and 1330 keV. Val ues of m/r for the cho sen poly mers de crease with in creas ing en ergy. The re sults of in ves ti gated data are use ful in plas tic in dus try, build ing ma te ri als, ag ri cul ture fields ra di a tion shield ing, ac cel er a tor cen ters, poly mer in dus try, med i cal field, etc.

Polymeric composite materials for radiation shielding: a review

“…Besides, polymers proved their performance and applicability in nuclear medicine as radiation shielding against Technetium-99m, where complexed grafted low-density polyethylene films revealed that the protection efficiency of complexed grafted films was higher than in grafted and virgin films (Awadallah-F and Antar 2014 ). Also, most frequently used polymers such as POM—polyoxymethylene, PAN—polyacrylonitrile, NR—natural rubber, PEA—polymethyl acrylate, PPM—poly-phenyl-methacrylate, PET—polyethylene terephthalate (Bhosale et al 2017 ) and polyamide (nylon 6) (PA-6), polyacrylonitrile (PAN), polyvinylidene chloride (PVDC), polyaniline (PANI), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polypyrrole (PPy), and polytetrafluoroethylene (PTFE) (Kaçal et al 2019 ) were studied in terms of their gamma radiation attenuation. Polyacrylonitrile, natural rubber, and polyvinylidene chloride have the highest attenuation coefficient values.…”

Detailed Inspection of γ-ray, Fast and Thermal Neutrons Shielding Competence of Calcium Oxide or Strontium Oxide Comprising Bismuth Borate Glasses

“…So sample S6 has superior γ-ray shielding capacity than the compared commercial glasses owing to its′ larger 'µ' than them. Earlier, SS403, CN, CS516, IL600, and MN400 alloys [57], C5H8, C3H3N, C5H8O2, C10H8O4, CH2O, and C10H10O2 polymers [58], and concretes, such as OC, BMC, HSC, IC, ILC, SMC, and SSC [59] were also reported for nuclear radiation shielding purpose by other researchers. For high Z elements (e.g., Bi) containing compounds, generally, at <0.5 MeV photon energies, the PEA (all photon energy fully passing on to a bound electron) is so common, and the CS phenomenon prevails at relatively moderate and greater γ-ray energies (~500 KeV-1.5 MeV).…”

Extensive theoretical study of gamma-ray shielding parameters using epoxy resin-metal chloride mixtures

“…Ef fec tive atomic num ber, Z eff , is im por tant for the de ter mi na tion of a sub sti tute ma te rial for an el e -ment as so ci ated with the re quired en ergy. The ef fective atomic num ber [17,18] is equal to the ra tio of the atomic and elec tronic cross-sec tions…”