scholarly journals Preliminary Empirical study of the Rayleigh to Compton scattering ratio for elements at gamma energy 59.5 keV using Si(Li) detector

2020 ◽  
Vol 4 (2) ◽  
pp. First
Author(s):  
Tran Thien Thanh ◽  
Van Tan Phat ◽  
Le Hoang Minh ◽  
Huynh Dinh Chuong ◽  
Vo Hoang Nguyen ◽  
...  
Keyword(s):  
Form Factor ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Quadratic Function ◽  
Experimental System ◽  
Radioactive Isotopes ◽  
Gamma Energy ◽  
Effective Electron ◽  
Relativistic Form ◽  
Relativistic Form Factor

The characteristic parameters of a material relation to photon interactions such as: mass attenuation coefficient, effective atomic number, effective electron density are required to provide essential data in diverse works such as nuclear diagnostic and cancer radiotherapy, industrial irradiation, radiation dosimetry, radiation protection and shielding, analyzing of the concentration of elements and radioactive isotopes. In this paper, the theoretical models such as non-relativistic form factor (NRFF), relativistic form factor  (RFF), and modified form factor (MFF) were used to calculate the ratio Rayleigh-Compton for elements with at gamma energy 59.5 keV. The results showed that there was a discrepancy between the theoretical modes at a high atomic number. The mean value of the Rayleigh-Compton ratio depends on the atomic number, which shows the quadratic function of the correlation coefficient R2 = 0.996 as well. Besides, the experimental system was set-up and measured for some targets such as aluminum, copper, and lead at a scattering angle 150o using 241Am source by Si(Li) detector to confirm the theoretical values. The preliminary result showed that there was a good agreement with experimental and theoretical results is lower than 20%. Further investigation will be measured by the samples for more detailed evaluation.

Erratum: Fully relativistic form factor for Thomson scattering [Phys. Rev. E81, 036411 (2010)]

2011 ◽  
Vol 83 (5) ◽  
Author(s):  
J. P. Palastro ◽  
J. S. Ross ◽  
B. Pollock ◽  
L. Divol ◽  
D. H. Froula ◽  
...  
Keyword(s):  
Form Factor ◽  
Thomson Scattering ◽  
Relativistic Form ◽  
Relativistic Form Factor

scholarly journals Fully relativistic form factor for Thomson scattering

2010 ◽  
Vol 81 (3) ◽  
Author(s):  
J. P. Palastro ◽  
J. S. Ross ◽  
B. Pollock ◽  
L. Divol ◽  
D. H. Froula ◽  
...  
Keyword(s):  
Form Factor ◽  
Thomson Scattering ◽  
Relativistic Form ◽  
Relativistic Form Factor

scholarly journals Energy Absorption and Exposure Buildup Factors of Essential Amino Acids

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ertuğrul Bursalıoğlu ◽  
Begüm Balkan ◽  
H. Birtan Kavanoz ◽  
Mustafa Okutan ◽  
Orhan İçelli ◽  
...  
Keyword(s):  
Amino Acids ◽  
Energy Range ◽  
Energy Absorption ◽  
Atomic Number ◽  
Effective Atomic Number ◽  
Essential Amino Acids ◽  
Effective Electron ◽  
Significant Interest ◽  
Effective Atomic Numbers ◽  
Buildup Factors

The effective atomic number and effective electron density in amino acids are of significant interest due to their use in various applications. The energy absorption buildup factors, exposure buildup factors, effective atomic numbers, and electron densities of essential amino acids such as Leucine (C6H13NO2), Lysine (C6H14N2O2), Methionine (C5H11NO2S), Phenylalanine (C9H11NO2), Threonine (C4H9NO3), Tryptophan (C11H12N2O2), Valine (C5H11NO2), Arginine (C6H14N4O2), and Histidine (C6H9N3O2) were determined theoretically in the energy range 0.015–15 MeV.

scholarly journals Investigation of Novel Composite Material Based on Extra-Heavy Concrete and Basalt Fiber for Gamma Radiation Protection Properties

2018 ◽  
pp. 52-58 ◽  
Author(s):  
І. Romanenko ◽  
M. Holiuk ◽  
A. Nosovsky ◽  
V. Hulik
Keyword(s):  
Composite Material ◽  
Gamma Radiation ◽  
Electron Density ◽  
Radiation Protection ◽  
Atomic Number ◽  
Gamma Ray ◽  
Basalt Fiber ◽  
Effective Atomic Number ◽  
Radiation Shielding ◽  
Effective Electron

The paper presents a new composite material for radiation protection based on extra-heavy concrete reinforced by basalt fiber. Basalt fiber is a new material for concrete reinforcement, which provides improved mechanical characteristics of concrete, reduces the level of microcracks and increases the durability of concrete. Within the scope of present work, the gamma-ray radiation protection properties of concrete reinforced with basalt fiber was modeled. Two types of extra-heavy concrete were used for this paper. The main gamma-ray attenuation coefficients such as mean atomic number, mean atomic mass, mean electron density, effective atomic number, effective electron density, Murty effective atomic number were analyzed with help of WinXCom software. It has been shown that the addition of basalt fiber to concrete does not impair its gamma-ray radiation shielding properties. With increasing the basalt fiber dosage in concrete, the radiation properties against gamma radiation are improved. This research was carried out with the financial support of the IAEA, within the terms and conditions of the Research Contract 20638 in the framework of the Coordinated Research Project (CRP) “Accelerator Driven Systems (ADS) Applications and use of Low-Enriched Uranium in ADS (T33002)” within the project “The Two-Zone Subcritical Systems with Fast and Thermal Neutron Spectra for Transmutation of Minor Actinides and Long-Lived Fission Products”.

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