Open AccessConsiderations of beta and electron transport in internal dose calculations. Progress report
Author(s) -
Wesley E. Bolch
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/61688
Subject(s) - oak ridge national laboratory , monte carlo method , electron , radiation transport , photon , physics , nuclear physics , absorbed dose , beta particle , electron transport chain , radionuclide , computational physics , nuclear medicine , radiation , atomic physics , chemistry , mathematics , statistics , medicine , optics , biochemistry
The goal of this particular task is to consider, for the first time, the explicit transport of beta particles and photon-generated electrons in the series of six phantoms developed by Cristy and Eckerman (1987) at the Oak Ridge National Laboratory. In their report, ORNL/TM-8381, specific absorbed fractions of energy are reported for phantoms representing the newborn (3.4 kg), the one-year-old (9.8 kg), the five-year-old (19 kg), the ten-year-old (32 kg), the fifteen-year-old/adult female (55-58 kg), and the adult male (70 kg). Radiation transport calculations were performed with the Monte Carlo code ALGAMP which allows photon transport only. In subsequent calculations of radionuclide S values as is done in the MIRDOSE2 computer program, electron absorbed fractions are thus considered to be either unity or zero depending upon whether the source region does or does not equal the target region, respectively