Stopping power and range calculations in human tissues by using the Hartree-Fock-Roothaan wave functions
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Dosyalar
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
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Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The object of this work is to present the consequences for the stopping power and range values of some human tissues at energies ranging from 1 MeV to 1 GeV and 1-500 MeV, respectively. The considered human tissues are lung, intestine, skin, larynx, breast, bladder, prostate and ovary. In this work, the stopping power is calculated by considering the number of velocity -dependent effective charge and effective mean excitation energies of the target material. We used the Hartree-Fock-Roothaan (HFR) atomic wave function to determine the charge density and the continuous slowing down approximation (CSDA) method for the calculation of the proton range. Electronic stopping power values of tissues results have been compared with the ICRU 44, 46 reports, SRIM, Janni and CasP data over the percent error rate. Range values relate to tissues have compared the range results with the SRIM, FLUKA and Geant4 data. For electronic stopping power results, ICRU, SRIM and Janni's data indicated the best fit with our values at 1-50, 50-250 MeV and 250 MeV-1 GeV, respectively. For range results, the best accordance with the calculated values have been found the SRIM data and the error level is less than 10% in proton therapy. However, greater 30% errors were observed in the 250 MeV and over energies.
Açıklama
2nd International Conference on Dosimetry and its Applications (ICDA) -- JUL 03-08, 2016 -- Univ Surrey, Guildford, ENGLAND
Anahtar Kelimeler
Stopping power, Range, Human tissue, Proton, Dosimetry
Kaynak
Radiation Physics and Chemistry
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
140
