Semi-empirical formula for photon energy absorption buildup factors of elements and compounds

Energy Absorption and Exposure Buildup Factors of Essential Amino Acids

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 (C4H9N...

Energy Absorption Buildup factor for some Oxide Glasses: Penetration Depth, Photon Energy and Effective Atomic Number Dependence

In present investigation, the study of gamma ray Energy absorption buildup factors (EABF) for three oxide glasses, viz. CaO-Al2O3, Na2O-SiO2, and Na2O-Al2O3-SiO2. The computations were done by ANSI/ANS-6.4.3 library and interpolation method using the Geometric Progression fitting formula for the energy range from 0.015 to 15 MeV, up to penetration depths 40 mfp (mean free path). The buildup fac...

A Comprehensive Study on Energy Absorption and Exposure Buildup Factors for some Soils and Ceramic Materials

Abstract: Study of gamma ray energy absorption (EABF) and exposure buildup factors (EBF) for some essential soils, ceramic materials in the energy region 0.015-15 MeV up to a penetration depth of 40 mfp (mean free path). To calculate both EABF and EBF, five parameter geometric progressions (G-P) fitting approximation has been used. Variation of EABF and EBF with incident photon energy, penetrat...

Two-photon absorption spectra of carotenoids compounds

Energy Optimization And Calculation Of Dose Absorption Enhancement Factor In Photon Activation Therapy

Introduction: Secondary radiation such as photoelectrons, Auger electrons and characteristic radiations cause a local boost in dose for a tumor when irradiated with an external X-ray beam after being loaded with elements capable of activating the tumor, e.g.; I and Gd. Materials and Methods:  In this investigation, the MCNPX code was used for simulation and calculation of dose enhancement facto...