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BioMed Research International
Volume 2014, Article ID 359754, 6 pages
Research Article

Energy Absorption and Exposure Buildup Factors of Essential Amino Acids

Department of Physics, Faculty of Arts and Sciences, Yıldız Technical University, Davutpasa, 34220 Istanbul, Turkey

Received 13 November 2013; Accepted 8 December 2013; Published 29 January 2014

Academic Editor: Jozef Anné

Copyright © 2014 Ertuğrul Bursalıoğlu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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.