The effective atomic number revisited in the light of modern photon-interaction cross-section databases

S.R. Manohara, S.M. Hanagodimath, K. S. Thind, Leif Gerward

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The effective atomic number, Z(eff), has been calculated for fatty acids and cysteine. It is shown that Z(eff) is a useful parameter for low-Z materials at any energy above 1 key. Absorption edges of medium-Z elements may complicate the energy dependence of Z(eff) below 10 key. The notion of Z(eff) is perhaps most useful at energies where Compton scattering is dominating, and where Z(eff) is equal to the mean atomic number, <Z >, over a wide energy range around 1 MeV.
Original languageEnglish
JournalApplied Radiation and Isotopes
Volume68
Issue number4-5
Pages (from-to)784-787
ISSN0969-8043
DOIs
Publication statusPublished - 2010

Keywords

  • Photon-interaction cross-sections
  • Effective atomic number
  • Biomolecules

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