Marrow Cell Kinetics Model; Equivalent Prompt Dose Approximations for Two Special Cases, ORNL/TM-12255

iii, 20 pages. Measures 8.5 inches by 11 inches. Small dirt mark on front cover. Binder clip mark on rear cover. Contains Abstract, Introduction, Case 1 and Case 2 (Approximation of Equivalent Prompt Dose for Given Time of Exposure; Approximation of Time Exposure for Given Equivalent Prompt; and Examples). Also contains References, List of figures (including dose rate function for Case 1, comparison of model and approximation for two examples of Case 1; Dose rate function for Case 2; and Comparison of model and approximation for two examples of Case 2.) This document describes two approximations derived from the cell kinetics model presented and discussed by Jones et al. (1991) and Morris et al. (1991). Troyce D. Jones Troyce joined the Radiation Dosimetry Research Section of the Health Physics Division at Oak Ridge National Laboratory (ORNL). This organization's research was carried out at remote field locations as well as the ORNL Dosimetry Applications Research facility, including the Health Physics Research Reactor. The principal research activity at that time involved the evaluation of neutron and gamma-ray spectra and dosimetry data from field experiments in atomic weapons and research reactor test environments at the Nevada Test Site in 1957, 1958, and 1962. These data represented measurements made inside individual rooms of Japanese-style houses built with material imported from Japan in 1957 and in similar structures constructed with wood framing covered with cement-asbestos board in 1958 and 1962. Data from these experiments were key in estimating radiation doses to survivors of the bombings of Hiroshima and Nagasaki, Japan. One principal objective was to determine shielding factors for typical Japanese houses. Troyce played a major role in determining survivor radiation exposure estimates considering shielding provided by a survivor's house as well as shielding by surrounding structures. These house-shielding factors were utilized by the ORNL team based on a survivor's known location, type of house and surrounding structures, and distance from ground zero. Troyce's work during his last 15 years of his career may have been his most productive. He was lead or coauthor of over 21 peer-reviewed publications and presentations. As established in these papers, he and his coworkers described mathematical models for biological, chemical, and radiological intakes in order to optimize medical therapeutic protocols.…