Title :
Gamma-ray transport through material layers
Author :
Garth, J.C. ; Turinetti, J.R.
Author_Institution :
Phillips Lab., Kirtland AFB, NM, USA
fDate :
12/1/1997 12:00:00 AM
Abstract :
The transmitted photon energy fluence was calculated as a function of layer thickness for 1.25 MeV photons in Al, Ag, and Pb using the CEPXS/ONELD coupled electron-photon code. The energy fluence vs. layer thickness was also calculated as a function of beam radius using the CYLTRAN Monte Carlo code. We compare these results with predictions using the photon “energy absorption coefficient attenuation law” equation recommended in ASTM Standard E666-91 and suggest replacing this equation with more realistic expression
Keywords :
Monte Carlo methods; dosimetry; gamma-rays; photon transport theory; 1.25 MeV; ASTM Standard E666-91; Ag; Al; CEPXS/ONELD coupled electron-photon code; CYLTRAN Monte Carlo code; Pb; beam radius; energy fluence; gamma-ray transport; layer thickness; material layer; photon energy absorption coefficient attenuation law equation; photon transmission; Absorption; Attenuation; Electromagnetic scattering; Electronic equipment testing; Equations; Laboratories; Monte Carlo methods; Particle scattering; Scattering parameters; X-ray scattering;
Journal_Title :
Nuclear Science, IEEE Transactions on
