TY - JOUR

T1 - The effective atomic number revisited in the light of modern photon-interaction cross-section databases

AU - Manohara, S.R.

AU - Hanagodimath, S.M.

AU - Thind, K. S.

AU - Gerward, Leif

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Photon-interaction cross-sections

KW - Effective atomic number

KW - Biomolecules

U2 - 10.1016/j.apradiso.2009.09.047

DO - 10.1016/j.apradiso.2009.09.047

M3 - Journal article

C2 - 19828324

SN - 0969-8043

VL - 68

SP - 784

EP - 787

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

IS - 4-5

ER -