A Study of Photon Interaction and Photon Energy Absorption Effective Atomic Numbers for Some Amino Acids

2010 ◽  
Vol 165 (2) ◽  
pp. 240-244 ◽  
Author(s):  
Tejbir Singh ◽  
Updesh Kaur ◽  
Shivali Tandon ◽  
Parjit S. Singh
Keyword(s):  
Amino Acids ◽  
Energy Absorption ◽  
Photon Energy ◽  
Photon Interaction ◽  
Effective Atomic Numbers

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.

Effective atomic numbers for photon energy absorption of some low-Z substances of dosimetric interest

2001 ◽  
Vol 62 (5-6) ◽  
pp. 371-377 ◽  
Author(s):  
Shivaramu ◽  
R. Vijayakumar ◽  
L. Rajasekaran ◽  
N. Ramamurthy
Keyword(s):  
Energy Absorption ◽  
Photon Energy ◽  
Effective Atomic Numbers

Mass Attenuation Coefficients and Effective Atomic Numbers of Strontium Borate Glass System in the Energy Range 0.01- 1.25 MeV

2014 ◽  
Vol 895 ◽  
pp. 315-318
Author(s):  
Tou Ying Lim ◽  
Husin Wagiran ◽  
Rosli Hussin ◽  
Suhairul Hashim
Keyword(s):  
Energy Range ◽  
Cross Section ◽  
Photon Energy ◽  
Power Law ◽  
Attenuation Coefficients ◽  
Photon Interaction ◽  
Strontium Borate ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Mass Attenuation

Understanding the characterization of photon interaction is vital in nuclear science and technology field. The information obtained from mass attenuation coefficients (μ / ρ) and effective atomic numbers Zeff are compared with the reference value for good interpretation of radiation interaction with matter. However, the methods of Zeff calculation sometimes are confusing. In the present work, the total mass attenuation coefficients (μ / ρ) T for photon interaction of Dy2O3 doped strontium borate glasses have been calculated using database tabulated by Hubbell and Seltzer, at the energies of 0.6 MeV and 1.25 MeV. For the calculation of the Zeff, the power law, cross section and Auto-Zeff are selected for comparison purpose in the energy range of 0.01 – 1.25 MeV. The relationship between the (μ / ρ) T andZeff clearly shows the increase in the value with the increase of Dy2O3 concentration. These variations are due to the major dominance of photoelectric effect and minor interaction of incoherent scattering. It is found that the calculation of Zeff between cross section and power law method is comparable at photon energy less than 0.1 MeV. As photon energy exceeds 0.1 MeV, the cross section method and the Auto- Zeff software are more preferred compared to the power law approach. It is recommended to use different approach of Zeff calculation at the specific energy of interest.

scholarly journals Effective Atomic Number and Kerma for Photon Energy Absorption of Organic Scintillators

2017 ◽  
Vol 13 (1) ◽  
pp. 1-12
Author(s):  
Anil Shantappa S M Hanagodimath
Keyword(s):  
Absorption Coefficient ◽  
Energy Absorption ◽  
Photon Energy ◽  
Atomic Number ◽  
Energy Region ◽  
Effective Atomic Number ◽  
Coherent Scattering ◽  
Mass Energy ◽  
Photon Interaction ◽  
Organic Scintillators

An attempt has been made to calculate the effective atomic number and Kerma for photon energy absorption of organic scintillators in the energy region 1 keV to 20 MeV. We have chosen seven organic scintillators viz., anthracene, stilbene, naphthalene, p -terphenyl, PPO, butyl PBD and PBD. The Z PEA, eff and Kerma values are calculated by using mass-energy absorption coefficient from Hubbell and Seltzer. We also calculated Z PI, eff for total photon interaction with coherent scattering by using WinXCom and compared with the Z PEA, eff.

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