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 -