scholarly journals Absorbed Dose Rate Distribution in 300 keV Electron Beam Irradiation Field for Waste-gas Purification

RADIOISOTOPES ◽  
2004 ◽  
Vol 53 (2) ◽  
pp. 59-69
Author(s):  
Teruyuki HAKODA ◽  
Hiromi SUNAGA ◽  
Haruki TAKIZAWA ◽  
Koichi HIROTA ◽  
Takuji KOJIMA
Keyword(s):  
Electron Beam ◽  
Dose Rate ◽  
Electron Beam Irradiation ◽  
Absorbed Dose ◽  
Gas Purification ◽  
Beam Irradiation ◽  
Absorbed Dose Rate ◽  
Rate Distribution ◽  
Waste Gas ◽  
Irradiation Field

scholarly journals Dose-rate effect of low-energy electron beam irradiation on bacterial content in chilled turkey

2021 ◽  
Vol 640 (3) ◽  
pp. 032006
Author(s):  
U A Bliznyuk ◽  
P Yu Borchegovskaya ◽  
A P Chernyaev ◽  
V S Ipatova ◽  
V A Leontiev ◽  
...  
Keyword(s):  
Electron Beam ◽  
Dose Rate ◽  
Electron Beam Irradiation ◽  
Rate Effect ◽  
Low Energy ◽  
Energy Electron ◽  
Beam Irradiation ◽  
Low Energy Electron ◽  
Bacterial Content ◽  
Dose Rate Effect

Effect of dose rate on degradation of 2,6-dichlorophenol by electron beam irradiation

2020 ◽  
Vol 323 (2) ◽  
pp. 975-982 ◽  
Author(s):  
Yongsheng Ling ◽  
Song Hu ◽  
Ting Chen ◽  
Xionghui Fei ◽  
Guang Wang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Dose Rate ◽  
Electron Beam Irradiation ◽  
Beam Irradiation

scholarly journals Influences of Absorbed Dose Rate on the Mechanical Properties and Fiber–Matrix Interaction of High-Density Polyethylene-Based Carbon Fiber Reinforced Thermoplastic Irradiated by Electron-Beam

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3012
Author(s):  
Se Kye Park ◽  
Dong Yun Choi ◽  
Duyoung Choi ◽  
Dong Yun Lee ◽  
Seung Hwa Yoo
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Carbon Fiber ◽  
Dose Rate ◽  
High Density Polyethylene ◽  
Absorbed Dose ◽  
High Density ◽  
Absorbed Dose Rate ◽  
Dose Rates ◽  
Absorbed Dose Rates

In this study, a high-density polyethylene (HDPE)-based carbon fiber-reinforced thermoplastic (CFRTP) was irradiated by an electron-beam. To assess the absorbed dose rate influence on its mechanical properties, the beam energy and absorbed dose were fixed, while the absorbed dose rates were varied. The tensile strength (TS) and Young’s modulus (YM) were evaluated. The irradiated CFRTP TS increased at absorbed dose rates of up to 6.8 kGy/s and decreased at higher rates. YM showed no meaningful differences. For CFRTPs constituents, the carbon fiber (CF) TS gradually increased, while the HDPE TS decreased slightly as the absorbed dose rates increased. The OH intermolecular bond was strongly developed in irradiated CFRTP at low absorbed dose rates and gradually declined when increasing those rates. X-ray photoelectron spectroscopy analysis revealed that the oxygen content of irradiated CFRTPs decreased with increasing absorbed dose rate due to the shorter irradiation time at higher dose rates. In conclusion, from the TS viewpoint, opposite effects occurred when increasing the absorbed dose rate: a favorable increase in CF TS and adverse decline of attractive hydrogen bonding interactions between HDPE and CF for CFRTPs TS. Therefore, the irradiated CFRTP TS was maximized at an optimum absorbed dose rate of 6.8 kGy/s.

scholarly journals Novel Organic Material Induced by Electron Beam Irradiation for Medical Application

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 306 ◽  
Author(s):  
Adrian Barylski ◽  
Krzysztof Aniołek ◽  
Andrzej S. Swinarew ◽  
Sławomir Kaptacz ◽  
Jadwiga Gabor ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Absorbed Dose ◽  
Medical Application ◽  
High Energy ◽  
Polymer Chains ◽  
Degree Of Crystallinity ◽  
Beam Irradiation ◽  
The Impact ◽  
The Degree Of Crystallinity

This study analyzed the effects of irradiation of polytetrafluoroethylene (PTFE) containing 40% of bronze using an electron beam with energy of 10 MeV. Dosages from 26 to156 kGy (2.6–15.6 Mrad) were used. The impact of a high-energy electron beam on the thermal, spectrophotometric, mechanical, and tribological properties was determined, and the results were compared with those obtained for pure PTFE. Thermal properties studies showed that such irradiation caused changes in melting temperature Tm and crystallization temperature Tc, an increase in crystallization heat ∆Hc, and a large increase in crystallinity χc proportional to the absorbed dose for both polymers. The addition of bronze decreased the degree of crystallinity of PTFE by twofold. Infrared spectroscopy (FTIR) studies confirmed that the main phenomenon associated with electron beam irradiation was the photodegradation of the polymer chains for both PTFE containing bronze and pure PTFE. This had a direct effect on the increase in the degree of crystallinity observed in DSC studies. The use of a bronze additive could lead to energy dissipation over the additive particles. An increase in hardness H and Young’s modulus E was also observed. The addition of bronze and the irradiation with an electron beam improved of the operational properties of PTFE.

scholarly journals Study on dose rate distribution inside diagnostic X-ray room by using MCNP5 code

2013 ◽  
Vol 16 (4) ◽  
pp. 35-42
Author(s):  
Loan Thi Hong Truong ◽  
Thu Thi Cam Nguyen ◽  
Hien Thi Doan ◽  
Khanh Ai Tran ◽  
Dung Thi Thuy Vo ◽  
...  
Keyword(s):  
Dose Rate ◽  
Radiation Safety ◽  
Absorbed Dose ◽  
Absorbed Dose Rate ◽  
Rate Distribution ◽  
X Ray ◽  
Room Size ◽  
Exact Determination ◽  
Mcnp5 Code

In this paper, the scattering influence on image quality and radiation safety because of changing room size was studied. To estimate the radiation safety in X-ray room, the exact determination of dose rate distribution inside the room and absorbed dose rate for patient is the first task. The authors simulated the dose rate distribution inside diagnostic X-ray room at Nhi Dong hospital with using MCNP5 code. The dependence of dose rate distribution on various peak voltages of X-ray tube was also investigated in this study

scholarly journals Calculation of Spatial Distribution of Dose Rate in Air Under 300 keV Electron Beam Irradiation Using a Monte Carlo Code (EGS4-SPG code)

RADIOISOTOPES ◽  
2005 ◽  
Vol 54 (6) ◽  
pp. 161-168 ◽  
Author(s):  
Teruyuki HAKODA ◽  
Hiroaki HANAYA ◽  
Hirohisa KANEKO ◽  
Atsumi MIYASHITA ◽  
Takuji KOJIMA
Keyword(s):  
Monte Carlo ◽  
Spatial Distribution ◽  
Electron Beam ◽  
Dose Rate ◽  
Electron Beam Irradiation ◽  
Monte Carlo Code ◽  
Beam Irradiation

scholarly journals PtRu/C Electrocatalysts Prepared Using Gamma and Electron Beam Irradiation for Methanol Electrooxidation

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Dionisio F. Silva ◽  
Adriana N. Geraldes ◽  
Eddy S. Pino ◽  
Almir Oliveira Neto ◽  
Marcelo Linardi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Gamma Irradiation ◽  
Dose Rate ◽  
Electron Beam Irradiation ◽  
Single Step ◽  
Methanol Electrooxidation ◽  
High Dose ◽  
Face Centered Cubic ◽  
Beam Irradiation ◽  
X Ray

PtRu/C electrocatalysts (carbon-supported PtRu nanoparticles) were prepared in a single step submitting water/2-propanol mixtures containing Pt(IV) and Ru(III) ions and the carbon support to gamma and electron beam irradiation. The electrocatalysts were characterized by energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), and cyclic voltammetry and tested for methanol electrooxidation. PtRu/C electrocatalyst can be prepared in few minutes using high dose rate electron beam irradiation while using low dose rate gamma irradiation some hours were necessary to prepare it. The obtained materials showed the face-centered cubic (fcc) structure of Pt and Pt alloys with average nanoparticle sizes of around 3 nm. The material prepared using electron beam irradiation was more active for methanol electrooxidation than the material prepared using gamma irradiation.

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